#0280B2
Closest named color: Nice Blue (#107AB0). oklch(56.6% 0.12 235), rgb(2, 128, 178).
Aa
Black text reads best on this color (4.73:1).
About this color
#0280B2 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.120 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Nice Blue (#107AB0), ΔE 0.017 away. Black text reads best on it, at 4.73:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Nice Blue (#107AB0) |
| Black text | 4.73:1 |
| White text | 4.43:1 |
Values
| HEX | #0280B2 |
| RGB | rgb(2, 128, 178) |
| HSL | hsl(197, 98%, 35%) |
| OKLCH | oklch(56.6% 0.12 235) |
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 #0280B2 | 4.43:1 | AA large text | Lc -75.6 | Fine for body text |
| Black text on #0280B2 | 4.73:1 | AA | Lc 33.9 | Non-text elements, placeholder text |
| #0280B2 text on white | 4.43:1 | AA large text | Lc 70.2 | Content text, not long reading |
| #0280B2 text on black | 4.73:1 | AA | Lc -31.5 | 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 600.
-
Step 50
50
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E0ECF3
oklch(93.6% 0.016 233)
-
Step 200
200
#C7DDEA
oklch(88.5% 0.03 233.6)
-
Step 300
300
#A0C7DF
oklch(81% 0.054 235.3)
-
Step 400
400
#68A9CF
oklch(70.6% 0.087 235.5)
-
Step 500
500
#3893C2
oklch(63% 0.11 235.1)
-
Step 600
600 (this color)
#0280B2
oklch(56.6% 0.12 235)
-
Step 700
700
#006993
oklch(49.2% 0.104 234.9)
-
Step 800
800
#005679
oklch(42.8% 0.09 234.7)
-
Step 900
900
#0F4762
oklch(37.7% 0.072 235)
-
Step 950
950
#0C2A39
oklch(27% 0.045 233.7)
#0280B2 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) | #677FB4 | 0.071 |
| Deuteranopia (no green cones) | #5271B1 | 0.059 |
| Tritanopia (no blue cones) | #008D91 | 0.074 |
| Achromatopsia (no color) | #787878 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0280B2
#0280B2
oklch(56.6% 0.12 235)
- #AB6126
#AB6126
oklch(56.7% 0.12 55.3)
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 #0280B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Nice Blue #107AB0 ΔE 0.017
- Blue NCS #118AB2 ΔE 0.031
- Steel Blue #4682B4 ΔE 0.036
- Windows Blue #3778BF ΔE 0.040
- Flat Blue #3C73A8 ΔE 0.041
- Cool Blue #4984B8 ΔE 0.042
- Cerulean #457B9D ΔE 0.042
- Water Blue #0E87CC ΔE 0.042
Use #0280B2 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.