#313E62
Closest named color: Dark Grey Blue (#29465B). oklch(37% 0.065 268.1), rgb(49, 62, 98).
Aa
White text reads best on this color (10.52:1).
About this color
#313E62 is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.065 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.032 away. White text reads best on it, at 10.52:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 1.99:1 |
| White text | 10.52:1 |
Values
| HEX | #313E62 |
| RGB | rgb(49, 62, 98) |
| HSL | hsl(224, 33%, 29%) |
| OKLCH | oklch(37% 0.065 268.1) |
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 #313E62 | 10.52:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #313E62 | 1.99:1 | Fails | Lc 9.6 | Not readable |
| #313E62 text on white | 10.52:1 | AAA | Lc 94.3 | Preferred for body text |
| #313E62 text on black | 1.99:1 | Fails | Lc -8.2 | 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 900.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D1D9EC
oklch(88.5% 0.028 267.5)
-
Step 300
300
#B3C0E1
oklch(80.9% 0.049 268.3)
-
Step 400
400
#8C9FD2
oklch(70.7% 0.078 268.6)
-
Step 500
500
#7087C6
oklch(63.2% 0.099 268.2)
-
Step 600
600
#5870B2
oklch(55.6% 0.107 267.7)
-
Step 700
700
#485D99
oklch(49% 0.1 268)
-
Step 800
800
#3B4C7C
oklch(42.5% 0.083 268)
-
Step 900
900 (this color)
#313E62
oklch(37% 0.065 268.1)
-
Step 950
950
#1E263B
oklch(27.2% 0.041 267.7)
#313E62 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) | #314163 | 0.009 |
| Deuteranopia (no green cones) | #2C3D61 | 0.008 |
| Tritanopia (no blue cones) | #1E464B | 0.059 |
| Achromatopsia (no color) | #3F3F3F | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313E62
#313E62
oklch(37% 0.065 268.1)
- #4E3D11
#4E3D11
oklch(36.9% 0.064 87.2)
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 #313E62, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.032
- Charcoal #264653 ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.044
- Dark Blue Grey #1F3B4D ΔE 0.046
- Twilight Blue #0A437A ΔE 0.050
- Marine Blue #01386A ΔE 0.053
- Onyx #343A40 ΔE 0.058
- Midnight Green #073B4C ΔE 0.061
Use #313E62 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.