#31367A
Closest named color: Twilight Blue (#0A437A). oklch(36.9% 0.114 276.1), rgb(49, 54, 122).
Aa
White text reads best on this color (10.82:1).
About this color
#31367A is a dark, moderately saturated blue. In OKLCH its lightness is 37%, its chroma 0.114 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.047 away. White text reads best on it, at 10.82:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.93:1 |
| White text | 10.82:1 |
Values
| HEX | #31367A |
| RGB | rgb(49, 54, 122) |
| HSL | hsl(236, 43%, 34%) |
| OKLCH | oklch(36.9% 0.114 276.1) |
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 #31367A | 10.82:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #31367A | 1.93:1 | Fails | Lc 9.1 | Not readable |
| #31367A text on white | 10.82:1 | AAA | Lc 94.8 | Preferred for body text |
| #31367A text on black | 1.93:1 | Fails | Lc -7.8 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9FB
oklch(93.6% 0.025 275.9)
-
Step 200
200
#D0D7F9
oklch(88.5% 0.047 276.2)
-
Step 300
300
#B1BCF8
oklch(80.8% 0.086 276.3)
-
Step 400
400
#8A98F5
oklch(70.8% 0.136 275.9)
-
Step 500
500
#6F7BF1
oklch(63.1% 0.175 275.8)
-
Step 600
600
#5A60DF
oklch(55.5% 0.19 276.2)
-
Step 700
700
#4A4FC2
oklch(49.2% 0.176 275.9)
-
Step 800
800
#3D419D
oklch(42.7% 0.147 276.3)
-
Step 900
900 (this color)
#31367A
oklch(36.9% 0.114 276.1)
-
Step 950
950
#1E2249
oklch(27.1% 0.072 276.1)
#31367A 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) | #0C407C | 0.041 |
| Deuteranopia (no green cones) | #003A79 | 0.044 |
| Tritanopia (no blue cones) | #034652 | 0.101 |
| Achromatopsia (no color) | #3D3D3D | 0.114 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31367A
#31367A
oklch(36.9% 0.114 276.1)
- #4B3F00
#4B3F00
oklch(36.9% 0.076 96.9)
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 #31367A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.051
- Marine Blue #01386A ΔE 0.054
- Cobalt #1E488F ΔE 0.058
- Blueberry #464196 ΔE 0.065
- Prussian Blue #1D3557 ΔE 0.068
- Marine #042E60 ΔE 0.073
- Light Navy #155084 ΔE 0.074
Use #31367A 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.