#256689
Closest named color: Denim (#3B638C). oklch(48.5% 0.086 236.1), rgb(37, 102, 137).
Aa
White text reads best on this color (6.28:1).
About this color
#256689 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.086 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.021 away. White text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.34:1 |
| White text | 6.28:1 |
Values
| HEX | #256689 |
| RGB | rgb(37, 102, 137) |
| HSL | hsl(201, 57%, 34%) |
| OKLCH | oklch(48.5% 0.086 236.1) |
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 #256689 | 6.28:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #256689 | 3.34:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #256689 text on white | 6.28:1 | AA | Lc 81.0 | Fine for body text |
| #256689 text on black | 3.34:1 | AA large text | Lc -20.8 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CBDCE7
oklch(88.5% 0.024 236)
-
Step 300
300
#A8C5D8
oklch(80.8% 0.041 236.8)
-
Step 400
400
#78A8C5
oklch(70.8% 0.067 235.5)
-
Step 500
500
#5391B6
oklch(63% 0.085 236.5)
-
Step 600
600
#357BA2
oklch(55.6% 0.092 236.3)
-
Step 700
700 (this color)
#256689
oklch(48.5% 0.086 236.1)
-
Step 800
800
#225571
oklch(42.8% 0.071 235.9)
-
Step 900
900
#22465B
oklch(37.7% 0.055 236.3)
-
Step 950
950
#142935
oklch(26.9% 0.035 235.2)
#256689 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) | #55658B | 0.051 |
| Deuteranopia (no green cones) | #485C88 | 0.042 |
| Tritanopia (no blue cones) | #006F72 | 0.056 |
| Achromatopsia (no color) | #606060 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256689
#256689
oklch(48.5% 0.086 236.1)
- #84512B
#84512B
oklch(48.5% 0.086 55.6)
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 #256689, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.021
- Peacock Blue #016795 ΔE 0.022
- Light Navy Blue #2E5A88 ΔE 0.036
- Ocean Blue #03719C ΔE 0.039
- Sea Blue #047495 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.044
- Dusky Blue #475F94 ΔE 0.044
Use #256689 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.