#31354B
Closest named color: Gunmetal (#293241). oklch(33.5% 0.039 276.1), rgb(49, 53, 75).
Aa
White text reads best on this color (12.05:1).
About this color
#31354B is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.039 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.024 away. White text reads best on it, at 12.05:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.74:1 |
| White text | 12.05:1 |
Values
| HEX | #31354B |
| RGB | rgb(49, 53, 75) |
| HSL | hsl(231, 21%, 24%) |
| OKLCH | oklch(33.5% 0.039 276.1) |
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 #31354B | 12.05:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #31354B | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #31354B text on white | 12.05:1 | AAA | Lc 97.6 | Preferred for body text |
| #31354B text on black | 1.74:1 | Fails | Lc 0.0 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E4
oklch(88.4% 0.017 278.5)
-
Step 300
300
#BBBFD4
oklch(80.8% 0.03 277.1)
-
Step 400
400
#989FBE
oklch(70.7% 0.046 275.2)
-
Step 500
500
#7F87AE
oklch(63.1% 0.059 275.6)
-
Step 600
600
#69709A
oklch(55.6% 0.066 276.7)
-
Step 700
700
#575E83
oklch(49.1% 0.06 275.7)
-
Step 800
800
#474D6B
oklch(42.8% 0.05 275.3)
-
Step 900
900 (this color)
#31354B
oklch(33.5% 0.039 276.1)
-
Step 950
950
#232633
oklch(27.1% 0.025 274.5)
#31354B 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) | #2E374C | 0.007 |
| Deuteranopia (no green cones) | #2D354A | 0.007 |
| Tritanopia (no blue cones) | #2A393D | 0.034 |
| Achromatopsia (no color) | #363636 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31354B
#31354B
oklch(33.5% 0.039 276.1)
- #3D371F
#3D371F
oklch(33.6% 0.039 95.8)
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 #31354B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.029
- Onyx #343A40 ΔE 0.030
- Space Cadet #2B2D42 ΔE 0.030
- Prussian Blue #1D3557 ΔE 0.034
- Midnight Green #073B4C ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.051
- Charcoal #264653 ΔE 0.054
Use #31354B 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.