#31586C
Closest named color: YInMn Blue (#415A77). oklch(44% 0.055 232.3), rgb(49, 88, 108).
Aa
White text reads best on this color (7.65:1).
About this color
#31586C is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.055 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.028 away. White text reads best on it, at 7.65:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.055) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.74:1 |
| White text | 7.65:1 |
Values
| HEX | #31586C |
| RGB | rgb(49, 88, 108) |
| HSL | hsl(200, 38%, 31%) |
| OKLCH | oklch(44% 0.055 232.3) |
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 #31586C | 7.65:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #31586C | 2.74:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #31586C text on white | 7.65:1 | AAA | Lc 86.5 | Fine for body text |
| #31586C text on black | 2.74:1 | Fails | Lc -15.6 | 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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CEDBE3
oklch(88.4% 0.018 234.5)
-
Step 300
300
#ADC5D2
oklch(81% 0.032 231.4)
-
Step 400
400
#81A7BC
oklch(70.8% 0.052 232.6)
-
Step 500
500
#6091AB
oklch(63.2% 0.066 232.4)
-
Step 600
600
#457B96
oklch(55.7% 0.071 231.7)
-
Step 700
700
#366780
oklch(49% 0.067 232.6)
-
Step 800
800 (this color)
#31586C
oklch(44% 0.055 232.3)
-
Step 900
900
#294655
oklch(37.8% 0.043 232.1)
-
Step 950
950
#182932
oklch(27% 0.028 232.3)
#31586C 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) | #4E576D | 0.037 |
| Deuteranopia (no green cones) | #46516C | 0.032 |
| Tritanopia (no blue cones) | #0E5D5F | 0.040 |
| Achromatopsia (no color) | #535353 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31586C
#31586C
oklch(44% 0.055 232.3)
- #6B4A36
#6B4A36
oklch(44% 0.055 52)
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 #31586C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.028
- Petrol #005F6A ΔE 0.034
- Light Navy Blue #2E5A88 ΔE 0.046
- Deep Teal #00555A ΔE 0.047
- Dusty Grape #545775 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.050
- Dusk #4E5481 ΔE 0.056
Use #31586C 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.