#2789FF
Closest named color: Dodger Blue (#1E90FF). oklch(63.9% 0.196 256.1), rgb(39, 137, 255).
Aa
Black text reads best on this color (6.10:1).
About this color
#2789FF is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.196 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.018 away. Black text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.196) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.10:1 |
| White text | 3.43:1 |
Values
| HEX | #2789FF |
| RGB | rgb(39, 137, 255) |
| HSL | hsl(213, 100%, 58%) |
| OKLCH | oklch(63.9% 0.196 256.1) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #2789FF | 3.43:1 | AA large text | Lc -66.8 | Content text, not long reading |
| Black text on #2789FF | 6.10:1 | AA | Lc 42.8 | Non-text elements, placeholder text |
| #2789FF text on white | 3.43:1 | AA large text | Lc 61.3 | Content text, not long reading |
| #2789FF text on black | 6.10:1 | AA | Lc -40.4 | Non-text elements, placeholder text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 500.
-
Step 50
50
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFD
oklch(93.6% 0.028 256.5)
-
Step 200
200
#C3DBFD
oklch(88.5% 0.054 257.1)
-
Step 300
300
#98C3FE
oklch(80.8% 0.096 256.4)
-
Step 400
400
#5CA2FE
oklch(70.8% 0.153 256)
-
Step 500
500 (this color)
#2789FF
oklch(63.9% 0.196 256.1)
-
Step 600
600
#006FDF
oklch(55.6% 0.191 256.1)
-
Step 700
700
#005DBD
oklch(49.1% 0.169 256.1)
-
Step 800
800
#004C9D
oklch(42.8% 0.147 256.2)
-
Step 900
900
#013F83
oklch(37.7% 0.128 256.1)
-
Step 950
950
#06264D
oklch(27.1% 0.081 255.8)
#2789FF with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #4694FF | 0.037 |
| Deuteranopia (no green cones) | #0081FD | 0.025 |
| Tritanopia (no blue cones) | #00A6B8 | 0.148 |
| Achromatopsia (no color) | #8A8A8A | 0.196 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2789FF
#2789FF
oklch(63.9% 0.196 256.1)
- #B97E00
#B97E00
oklch(63.7% 0.134 76)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #2789FF, closest first.
No curated palette has a color within ΔE 0.04 of #2789FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.018
- Clear Blue #247AFD ΔE 0.038
- Dark Sky Blue #448EE4 ΔE 0.048
- Chefchaouen Blue #4895EF ΔE 0.049
- Soft Blue #6488EA ΔE 0.055
- Cornflower #6A79F7 ΔE 0.063
- Cornflower Blue #6495ED ΔE 0.067
- Cerulean Blue #056EEE ΔE 0.075
Use #2789FF in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.