#256899
Closest named color: Peacock Blue (#016795). oklch(49.9% 0.103 244.4), rgb(37, 104, 153).
Aa
White text reads best on this color (5.96:1).
About this color
#256899 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.103 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Peacock Blue (#016795), ΔE 0.017 away. White text reads best on it, at 5.96:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Peacock Blue (#016795) |
| Black text | 3.51:1 |
| White text | 5.96:1 |
Values
| HEX | #256899 |
| RGB | rgb(37, 104, 153) |
| HSL | hsl(205, 61%, 37%) |
| OKLCH | oklch(49.9% 0.103 244.4) |
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 #256899 | 5.96:1 | AA | Lc -84.7 | Fine for body text |
| Black text on #256899 | 3.51:1 | AA large text | Lc 24.5 | Dividers and decoration only |
| #256899 text on white | 5.96:1 | AA | Lc 79.5 | Fine for body text |
| #256899 text on black | 3.51:1 | AA large text | Lc -22.3 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEB
oklch(88.6% 0.028 244.7)
-
Step 300
300
#A6C5DF
oklch(80.9% 0.05 243.7)
-
Step 400
400
#75A6CF
oklch(70.6% 0.08 244.5)
-
Step 500
500
#5090C3
oklch(63.2% 0.102 244.5)
-
Step 600
600
#3079AF
oklch(55.6% 0.111 244.3)
-
Step 700
700 (this color)
#256899
oklch(49.9% 0.103 244.4)
-
Step 800
800
#1F537A
oklch(42.7% 0.085 244.5)
-
Step 900
900
#1F4562
oklch(37.7% 0.066 243.9)
-
Step 950
950
#13293A
oklch(27.2% 0.042 243.6)
#256899 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) | #51699B | 0.044 |
| Deuteranopia (no green cones) | #415F98 | 0.033 |
| Tritanopia (no blue cones) | #007479 | 0.073 |
| Achromatopsia (no color) | #636363 | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256899
#256899
oklch(49.9% 0.103 244.4)
- #8B5516
#8B5516
oklch(50% 0.103 64.4)
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 #256899, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Peacock Blue #016795 ΔE 0.017
- Denim #3B638C ΔE 0.026
- Ocean Blue #03719C ΔE 0.027
- Muted Blue #3B719F ΔE 0.035
- Dusky Blue #475F94 ΔE 0.037
- Sea Blue #047495 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.039
- Mid Blue #276AB3 ΔE 0.041
Use #256899 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.