#31456B
Closest named color: Dark Grey Blue (#29465B). oklch(39.2% 0.07 262.5), rgb(49, 69, 107).
Aa
White text reads best on this color (9.57:1).
About this color
#31456B is a dark, muted blue. In OKLCH its lightness is 39%, its chroma 0.070 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.031 away. White text reads best on it, at 9.57:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #31456B |
| RGB | rgb(49, 69, 107) |
| HSL | hsl(219, 37%, 31%) |
| OKLCH | oklch(39.2% 0.07 262.5) |
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 #31456B | 9.57:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #31456B | 2.19:1 | Fails | Lc 11.9 | Not readable |
| #31456B text on white | 9.57:1 | AAA | Lc 92.1 | Preferred for body text |
| #31456B text on black | 2.19:1 | Fails | Lc -10.3 | 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 900.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAED
oklch(88.6% 0.029 261.5)
-
Step 300
300
#AFC1E3
oklch(80.9% 0.052 263.1)
-
Step 400
400
#85A1D5
oklch(70.7% 0.083 262.5)
-
Step 500
500
#6689CA
oklch(63.2% 0.106 262.1)
-
Step 600
600
#4D72B7
oklch(55.7% 0.116 262)
-
Step 700
700
#3E5F9E
oklch(49.1% 0.109 262.2)
-
Step 800
800
#344E80
oklch(42.8% 0.089 262.4)
-
Step 900
900 (this color)
#31456B
oklch(39.2% 0.07 262.5)
-
Step 950
950
#1B263C
oklch(27% 0.044 263.4)
#31456B 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) | #36486D | 0.012 |
| Deuteranopia (no green cones) | #2F436A | 0.007 |
| Tritanopia (no blue cones) | #154D53 | 0.062 |
| Achromatopsia (no color) | #454545 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31456B
#31456B
oklch(39.2% 0.07 262.5)
- #584212
#584212
oklch(39.3% 0.07 83.1)
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 #31456B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.031
- Twilight Blue #0A437A ΔE 0.043
- Charcoal #264653 ΔE 0.046
- Light Navy #155084 ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.056
- Cobalt #1E488F ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.063
- Dusk Blue #26538D ΔE 0.063
Use #31456B 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.