#278EFA
Closest named color: Dodger Blue (#1E90FF). oklch(64.6% 0.185 253.8), rgb(39, 142, 250).
Aa
Black text reads best on this color (6.33:1).
About this color
#278EFA is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.185 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Dodger Blue (#1E90FF), ΔE 0.008 away. Black text reads best on it, at 6.33:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.185) |
| Temperature | cool |
| Nearest name | Dodger Blue (#1E90FF) |
| Black text | 6.33:1 |
| White text | 3.31:1 |
Values
| HEX | #278EFA |
| RGB | rgb(39, 142, 250) |
| HSL | hsl(211, 95%, 57%) |
| OKLCH | oklch(64.6% 0.185 253.8) |
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 #278EFA | 3.31:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #278EFA | 6.33:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #278EFA text on white | 3.31:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #278EFA text on black | 6.33:1 | AA | Lc -41.7 | 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
#F0F6FE
oklch(97.1% 0.012 255.5)
-
Step 100
100
#DEEBFC
oklch(93.5% 0.027 255.1)
-
Step 200
200
#C3DCFA
oklch(88.6% 0.049 253.1)
-
Step 300
300
#98C4FA
oklch(80.9% 0.09 253.9)
-
Step 400
400
#5BA3F8
oklch(70.6% 0.145 253.9)
-
Step 500
500 (this color)
#278EFA
oklch(64.6% 0.185 253.8)
-
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
#00417E
oklch(37.7% 0.118 253.6)
-
Step 950
950
#05264A
oklch(26.8% 0.077 253.9)
#278EFA 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) | #5697FE | 0.044 |
| Deuteranopia (no green cones) | #2985F8 | 0.023 |
| Tritanopia (no blue cones) | #00A8B8 | 0.137 |
| Achromatopsia (no color) | #8D8D8D | 0.185 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #278EFA
#278EFA
oklch(64.6% 0.185 253.8)
- #BF7F00
#BF7F00
oklch(64.6% 0.137 73.8)
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 #278EFA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dodger Blue #1E90FF ΔE 0.008
- Chefchaouen Blue #4895EF ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.036
- Soft Blue #6488EA ΔE 0.050
- Clear Blue #247AFD ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.056
- Cornflower #6A79F7 ΔE 0.069
- Water Blue #0E87CC ΔE 0.072
Use #278EFA 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.