#256A8A
Closest named color: Peacock Blue (#016795). oklch(49.6% 0.085 232.4), rgb(37, 106, 138).
Aa
White text reads best on this color (5.98:1).
About this color
#256A8A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.085 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.026 away. White text reads best on it, at 5.98:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.50:1 |
| White text | 5.98:1 |
Values
| HEX | #256A8A |
| RGB | rgb(37, 106, 138) |
| HSL | hsl(199, 58%, 34%) |
| OKLCH | oklch(49.6% 0.085 232.4) |
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 #256A8A | 5.98:1 | AA | Lc -84.9 | Fine for body text |
| Black text on #256A8A | 3.50:1 | AA large text | Lc 24.4 | Dividers and decoration only |
| #256A8A text on white | 5.98:1 | AA | Lc 79.7 | Fine for body text |
| #256A8A text on black | 3.50:1 | AA large text | Lc -22.2 | 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 700.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D7
oklch(80.9% 0.041 231.9)
-
Step 400
400
#77A8C3
oklch(70.7% 0.065 233)
-
Step 500
500
#5192B4
oklch(63% 0.084 233.1)
-
Step 600
600
#327CA0
oklch(55.6% 0.091 233)
-
Step 700
700 (this color)
#256A8A
oklch(49.6% 0.085 232.4)
-
Step 800
800
#20556F
oklch(42.6% 0.07 233.2)
-
Step 900
900
#20475A
oklch(37.8% 0.055 231.9)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#256A8A 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) | #5A698C | 0.055 |
| Deuteranopia (no green cones) | #4C5F8A | 0.047 |
| Tritanopia (no blue cones) | #007375 | 0.052 |
| Achromatopsia (no color) | #636363 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256A8A
#256A8A
oklch(49.6% 0.085 232.4)
- #885432
#885432
oklch(49.7% 0.085 52.8)
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 #256A8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.026
- Denim #3B638C ΔE 0.027
- Sea Blue #047495 ΔE 0.031
- Ocean Blue #03719C ΔE 0.031
- Muted Blue #3B719F ΔE 0.043
- Light Navy Blue #2E5A88 ΔE 0.048
- Ocean #017B92 ΔE 0.049
- Dusky Blue #475F94 ΔE 0.049
Use #256A8A 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.