#0278AE
Closest named color: Nice Blue (#107AB0). oklch(54.4% 0.121 238.6), rgb(2, 120, 174).
Aa
White text reads best on this color (4.88:1).
About this color
#0278AE is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.121 and its hue 239°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.008 away. White text reads best on it, at 4.88:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.30:1 |
| White text | 4.88:1 |
Values
| HEX | #0278AE |
| RGB | rgb(2, 120, 174) |
| HSL | hsl(199, 98%, 35%) |
| OKLCH | oklch(54.4% 0.121 238.6) |
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 #0278AE | 4.88:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #0278AE | 4.30:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #0278AE text on white | 4.88:1 | AA | Lc 73.2 | Content text, not long reading |
| #0278AE text on black | 4.30:1 | AA large text | Lc -28.5 | Dividers and decoration only |
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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF3
oklch(93.7% 0.015 235.4)
-
Step 200
200
#C8DDEB
oklch(88.6% 0.03 236.9)
-
Step 300
300
#A1C6E0
oklch(80.8% 0.054 239)
-
Step 400
400
#6BA9D1
oklch(70.8% 0.087 238)
-
Step 500
500
#3D92C5
oklch(63.1% 0.112 238.6)
-
Step 600
600 (this color)
#0278AE
oklch(54.4% 0.121 238.6)
-
Step 700
700
#006897
oklch(49.1% 0.109 238.1)
-
Step 800
800
#05557C
oklch(42.7% 0.093 238.5)
-
Step 900
900
#134664
oklch(37.6% 0.073 239.3)
-
Step 950
950
#0D293A
oklch(26.9% 0.046 238.6)
#0278AE 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) | #5E79B0 | 0.065 |
| Deuteranopia (no green cones) | #486BAD | 0.050 |
| Tritanopia (no blue cones) | #00868B | 0.079 |
| Achromatopsia (no color) | #717171 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0278AE
#0278AE
oklch(54.4% 0.121 238.6)
- #A35B14
#A35B14
oklch(54.4% 0.122 58.3)
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 #0278AE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.008
- Flat Blue #3C73A8 ΔE 0.029
- Ocean Blue #03719C ΔE 0.032
- Muted Blue #3B719F ΔE 0.034
- Windows Blue #3778BF ΔE 0.038
- Sea Blue #047495 ΔE 0.039
- Mid Blue #276AB3 ΔE 0.043
- Dull Blue #49759C ΔE 0.045
Use #0278AE 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.