#315A72
Closest named color: YInMn Blue (#415A77). oklch(44.8% 0.061 236), rgb(49, 90, 114).
Aa
White text reads best on this color (7.40:1).
About this color
#315A72 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.061 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.021 away. White text reads best on it, at 7.40:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #315A72 |
| RGB | rgb(49, 90, 114) |
| HSL | hsl(202, 40%, 32%) |
| OKLCH | oklch(44.8% 0.061 236) |
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 #315A72 | 7.40:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #315A72 | 2.83:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #315A72 text on white | 7.40:1 | AAA | Lc 85.6 | Fine for body text |
| #315A72 text on black | 2.83:1 | Fails | Lc -16.4 | 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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDBE5
oklch(88.4% 0.02 238.7)
-
Step 300
300
#ACC5D5
oklch(81% 0.035 236)
-
Step 400
400
#7FA7C0
oklch(70.8% 0.057 236.1)
-
Step 500
500
#5D91B0
oklch(63.2% 0.073 235.7)
-
Step 600
600
#427A9B
oklch(55.5% 0.078 236.4)
-
Step 700
700
#336785
oklch(49.1% 0.074 236.2)
-
Step 800
800 (this color)
#315A72
oklch(44.8% 0.061 236)
-
Step 900
900
#274657
oklch(37.8% 0.047 233.9)
-
Step 950
950
#182933
oklch(27.1% 0.029 235.2)
#315A72 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) | #4F5973 | 0.038 |
| Deuteranopia (no green cones) | #465272 | 0.033 |
| Tritanopia (no blue cones) | #026062 | 0.047 |
| Achromatopsia (no color) | #555555 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315A72
#315A72
oklch(44.8% 0.061 236)
- #6F4C33
#6F4C33
oklch(44.9% 0.061 56)
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 #315A72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.021
- Petrol #005F6A ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.037
- Dusty Grape #545775 ΔE 0.046
- Deep Sea Blue #015482 ΔE 0.047
- Denim #3B638C ΔE 0.048
- Dusk #4E5481 ΔE 0.050
- Light Navy #155084 ΔE 0.054
Use #315A72 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.