#31576D
Closest named color: YInMn Blue (#415A77). oklch(43.8% 0.057 235.5), rgb(49, 87, 109).
Aa
White text reads best on this color (7.73:1).
About this color
#31576D is a dark, muted blue. In OKLCH its lightness is 44%, its chroma 0.057 and its hue 235°. 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 7.73:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.71:1 |
| White text | 7.73:1 |
Values
| HEX | #31576D |
| RGB | rgb(49, 87, 109) |
| HSL | hsl(202, 38%, 31%) |
| OKLCH | oklch(43.8% 0.057 235.5) |
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 #31576D | 7.73:1 | AAA | Lc -91.5 | Preferred for body text |
| Black text on #31576D | 2.71:1 | Fails | Lc 17.3 | Dividers and decoration only |
| #31576D text on white | 7.73:1 | AAA | Lc 86.8 | Fine for body text |
| #31576D text on black | 2.71:1 | Fails | Lc -15.3 | 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 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
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ADC5D3
oklch(81% 0.033 233.4)
-
Step 400
400
#81A6BD
oklch(70.6% 0.053 235.8)
-
Step 500
500
#6090AD
oklch(63% 0.068 235.9)
-
Step 600
600
#467A99
oklch(55.6% 0.074 236.3)
-
Step 700
700
#376782
oklch(49.2% 0.068 235.1)
-
Step 800
800 (this color)
#31576D
oklch(43.8% 0.057 235.5)
-
Step 900
900
#294556
oklch(37.6% 0.045 236.3)
-
Step 950
950
#192932
oklch(27.1% 0.027 233.8)
#31576D 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) | #4D566E | 0.036 |
| Deuteranopia (no green cones) | #44506D | 0.030 |
| Tritanopia (no blue cones) | #0D5D5E | 0.045 |
| Achromatopsia (no color) | #535353 | 0.057 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31576D
#31576D
oklch(43.8% 0.057 235.5)
- #6A4A33
#6A4A33
oklch(43.8% 0.056 56.4)
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 #31576D, 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 0.037
- Light Navy Blue #2E5A88 ΔE 0.044
- Deep Sea Blue #015482 ΔE 0.048
- Deep Teal #00555A ΔE 0.048
- Dusty Grape #545775 ΔE 0.049
- Dark Slate Gray #2F4F4F ΔE 0.051
- Light Navy #155084 ΔE 0.054
Use #31576D 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.