#31406A
Closest named color: Dark Grey Blue (#29465B). oklch(38% 0.075 267.9), rgb(49, 64, 106).
Aa
White text reads best on this color (10.13:1).
About this color
#31406A is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.075 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.037 away. White text reads best on it, at 10.13:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.07:1 |
| White text | 10.13:1 |
Values
| HEX | #31406A |
| RGB | rgb(49, 64, 106) |
| HSL | hsl(224, 37%, 30%) |
| OKLCH | oklch(38% 0.075 267.9) |
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 #31406A | 10.13:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #31406A | 2.07:1 | Fails | Lc 10.5 | Not readable |
| #31406A text on white | 10.13:1 | AAA | Lc 93.4 | Preferred for body text |
| #31406A text on black | 2.07:1 | Fails | Lc -9.1 | 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
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EE
oklch(88.5% 0.031 267.2)
-
Step 300
300
#B1C0E6
oklch(80.9% 0.056 268.2)
-
Step 400
400
#889FD9
oklch(70.7% 0.089 267.5)
-
Step 500
500
#6B86CF
oklch(63.1% 0.115 267.7)
-
Step 600
600
#546EBC
oklch(55.5% 0.125 268.3)
-
Step 700
700
#445CA2
oklch(49.1% 0.116 267.8)
-
Step 800
800
#384B83
oklch(42.6% 0.096 268)
-
Step 900
900 (this color)
#31406A
oklch(38% 0.075 267.9)
-
Step 950
950
#1C253E
oklch(26.9% 0.049 268)
#31406A 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) | #30446C | 0.012 |
| Deuteranopia (no green cones) | #293F69 | 0.012 |
| Tritanopia (no blue cones) | #184950 | 0.066 |
| Achromatopsia (no color) | #414141 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31406A
#31406A
oklch(38% 0.075 267.9)
- #533F05
#533F05
oklch(37.9% 0.075 87.3)
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 #31406A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.037
- Twilight Blue #0A437A ΔE 0.041
- Charcoal #264653 ΔE 0.051
- Marine Blue #01386A ΔE 0.054
- Prussian Blue #1D3557 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.058
- Light Navy #155084 ΔE 0.059
- Cobalt #1E488F ΔE 0.064
Use #31406A 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.