#31456D
Closest named color: Dark Grey Blue (#29465B). oklch(39.3% 0.073 263.2), rgb(49, 69, 109).
Aa
White text reads best on this color (9.53:1).
About this color
#31456D is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.073 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.035 away. White text reads best on it, at 9.53:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #31456D |
| RGB | rgb(49, 69, 109) |
| HSL | hsl(220, 38%, 31%) |
| OKLCH | oklch(39.3% 0.073 263.2) |
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 #31456D | 9.53:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #31456D | 2.20:1 | Fails | Lc 12.0 | Not readable |
| #31456D text on white | 9.53:1 | AAA | Lc 92.0 | Preferred for body text |
| #31456D text on black | 2.20:1 | Fails | Lc -10.4 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFDAEE
oklch(88.6% 0.03 262.5)
-
Step 300
300
#AEC1E5
oklch(80.9% 0.055 263.2)
-
Step 400
400
#84A1D8
oklch(70.8% 0.087 262.8)
-
Step 500
500
#6688CD
oklch(63.1% 0.111 263.5)
-
Step 600
600
#4D71BA
oklch(55.6% 0.121 263.2)
-
Step 700
700
#3E5EA0
oklch(49% 0.113 263.3)
-
Step 800
800
#334D82
oklch(42.6% 0.094 263.2)
-
Step 900
900 (this color)
#31456D
oklch(39.3% 0.073 263.2)
-
Step 950
950
#1A263D
oklch(27% 0.046 262.7)
#31456D 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) | #35486F | 0.011 |
| Deuteranopia (no green cones) | #2E436C | 0.008 |
| Tritanopia (no blue cones) | #134E54 | 0.065 |
| Achromatopsia (no color) | #454545 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31456D
#31456D
oklch(39.3% 0.073 263.2)
- #59420E
#59420E
oklch(39.4% 0.073 83.2)
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 #31456D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.035
- Twilight Blue #0A437A ΔE 0.041
- Light Navy #155084 ΔE 0.048
- Charcoal #264653 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.055
- Cobalt #1E488F ΔE 0.058
- Dusk Blue #26538D ΔE 0.061
- Marine Blue #01386A ΔE 0.063
Use #31456D 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.