#315371
Closest named color: YInMn Blue (#415A77). oklch(43% 0.064 246.6), rgb(49, 83, 113).
Aa
White text reads best on this color (8.05:1).
About this color
#315371 is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.064 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.031 away. White text reads best on it, at 8.05:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.60:1 |
| White text | 8.05:1 |
Values
| HEX | #315371 |
| RGB | rgb(49, 83, 113) |
| HSL | hsl(208, 40%, 32%) |
| OKLCH | oklch(43% 0.064 246.6) |
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 #315371 | 8.05:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #315371 | 2.60:1 | Fails | Lc 16.2 | Dividers and decoration only |
| #315371 text on white | 8.05:1 | AAA | Lc 87.8 | Fine for body text |
| #315371 text on black | 2.60:1 | Fails | Lc -14.3 | Not readable |
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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AEC4D8
oklch(81% 0.037 245.7)
-
Step 400
400
#83A5C4
oklch(70.8% 0.059 246.3)
-
Step 500
500
#638EB5
oklch(63.1% 0.076 246.7)
-
Step 600
600
#4978A1
oklch(55.7% 0.082 246.3)
-
Step 700
700
#3A658A
oklch(49.2% 0.077 246.1)
-
Step 800
800 (this color)
#315371
oklch(43% 0.064 246.6)
-
Step 900
900
#2B445B
oklch(37.7% 0.05 247.3)
-
Step 950
950
#192835
oklch(27% 0.032 245.5)
#315371 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) | #465472 | 0.027 |
| Deuteranopia (no green cones) | #3E4D70 | 0.022 |
| Tritanopia (no blue cones) | #085A5D | 0.055 |
| Achromatopsia (no color) | #505050 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #315371
#315371
oklch(43% 0.064 246.6)
- #674927
#674927
oklch(43% 0.064 68.2)
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 #315371, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.031
- Deep Sea Blue #015482 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.039
- Light Navy #155084 ΔE 0.042
- Dusk Blue #26538D ΔE 0.047
- Dusk #4E5481 ΔE 0.048
- Petrol #005F6A ΔE 0.049
- Dusty Grape #545775 ΔE 0.051
Use #315371 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.