#2788EE
Closest named color: Dodger Blue (#1E90FF). oklch(62.5% 0.176 253.7), rgb(39, 136, 238).
Aa
Black text reads best on this color (5.84:1).
About this color
#2788EE is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.176 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.030 away. Black text reads best on it, at 5.84:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.176) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 5.84:1 |
| White text | 3.59:1 |
Values
| HEX | #2788EE |
| RGB | rgb(39, 136, 238) |
| HSL | hsl(211, 85%, 54%) |
| OKLCH | oklch(62.5% 0.176 253.7) |
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 #2788EE | 3.59:1 | AA large text | Lc -68.5 | Content text, not long reading |
| Black text on #2788EE | 5.84:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #2788EE text on white | 3.59:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #2788EE text on black | 5.84:1 | AA | Lc -38.7 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFB
oklch(93.6% 0.025 255.6)
-
Step 200
200
#C4DCF9
oklch(88.6% 0.048 253.2)
-
Step 300
300
#9AC4F8
oklch(80.9% 0.087 254.1)
-
Step 400
400
#5FA3F4
oklch(70.6% 0.138 253.9)
-
Step 500
500 (this color)
#2788EE
oklch(62.5% 0.176 253.7)
-
Step 600
600
#0072D6
oklch(55.6% 0.176 253.8)
-
Step 700
700
#0060B5
oklch(49.2% 0.155 253.6)
-
Step 800
800
#004E96
oklch(42.7% 0.135 253.8)
-
Step 900
900
#04417C
oklch(37.6% 0.115 253.6)
-
Step 950
950
#072749
oklch(27.1% 0.073 253.3)
#2788EE 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) | #5390F2 | 0.041 |
| Deuteranopia (no green cones) | #2B7FEC | 0.023 |
| Tritanopia (no blue cones) | #00A0AF | 0.131 |
| Achromatopsia (no color) | #878787 | 0.176 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2788EE
#2788EE
oklch(62.5% 0.176 253.7)
- #B77900
#B77900
oklch(62.5% 0.133 73.4)
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 #2788EE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.031
- Chefchaouen Blue #4895EF ΔE 0.044
- Clear Blue #247AFD ΔE 0.045
- Soft Blue #6488EA ΔE 0.049
- Water Blue #0E87CC ΔE 0.054
- Cornflower Blue #6495ED ΔE 0.064
- Cornflower #6A79F7 ΔE 0.067
Use #2788EE 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.