#256587
Closest named color: Denim (#3B638C). oklch(48.2% 0.084 235.7), rgb(37, 101, 135).
Aa
White text reads best on this color (6.38:1).
About this color
#256587 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.084 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.022 away. White text reads best on it, at 6.38:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.28:1 |
| White text | 6.38:1 |
Values
| HEX | #256587 |
| RGB | rgb(37, 101, 135) |
| HSL | hsl(201, 57%, 34%) |
| OKLCH | oklch(48.2% 0.084 235.7) |
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 #256587 | 6.38:1 | AA | Lc -86.6 | Fine for body text |
| Black text on #256587 | 3.28:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #256587 text on white | 6.38:1 | AA | Lc 81.5 | Fine for body text |
| #256587 text on black | 3.28:1 | AA large text | Lc -20.4 | 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
#CCDCE6
oklch(88.5% 0.022 235)
-
Step 300
300
#A8C5D8
oklch(80.8% 0.041 236.8)
-
Step 400
400
#79A8C4
oklch(70.8% 0.065 235.1)
-
Step 500
500
#5491B5
oklch(63% 0.083 236.1)
-
Step 600
600
#367BA1
oklch(55.5% 0.091 235.8)
-
Step 700
700 (this color)
#256587
oklch(48.2% 0.084 235.7)
-
Step 800
800
#235570
oklch(42.8% 0.07 235.3)
-
Step 900
900
#22465B
oklch(37.7% 0.055 236.3)
-
Step 950
950
#152935
oklch(27% 0.034 236.3)
#256587 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) | #556489 | 0.051 |
| Deuteranopia (no green cones) | #475B86 | 0.042 |
| Tritanopia (no blue cones) | #006E71 | 0.054 |
| Achromatopsia (no color) | #5F5F5F | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #256587
#256587
oklch(48.2% 0.084 235.7)
- #82512C
#82512C
oklch(48.3% 0.084 56.2)
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 #256587, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.022
- Peacock Blue #016795 ΔE 0.024
- Light Navy Blue #2E5A88 ΔE 0.034
- YInMn Blue #415A77 ΔE 0.041
- Denim Blue #3B5B92 ΔE 0.042
- Ocean Blue #03719C ΔE 0.042
- Sea Blue #047495 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.045
Use #256587 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.