#31436D
Closest named color: Dark Grey Blue (#29465B). oklch(38.9% 0.075 265.5), rgb(49, 67, 109).
Aa
White text reads best on this color (9.74:1).
About this color
#31436D is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.075 and its hue 265°. 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 9.74:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.15:1 |
| White text | 9.74:1 |
Values
| HEX | #31436D |
| RGB | rgb(49, 67, 109) |
| HSL | hsl(222, 38%, 31%) |
| OKLCH | oklch(38.9% 0.075 265.5) |
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 #31436D | 9.74:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #31436D | 2.15:1 | Fails | Lc 11.5 | Not readable |
| #31436D text on white | 9.74:1 | AAA | Lc 92.5 | Preferred for body text |
| #31436D text on black | 2.15:1 | Fails | Lc -9.9 | 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
#CFD9EF
oklch(88.4% 0.032 266.1)
-
Step 300
300
#AFC1E6
oklch(81% 0.056 264.7)
-
Step 400
400
#85A0DA
oklch(70.8% 0.091 264.9)
-
Step 500
500
#6887D0
oklch(63.2% 0.116 265.7)
-
Step 600
600
#4F70BD
oklch(55.7% 0.126 265.1)
-
Step 700
700
#405DA3
oklch(49.1% 0.117 265.4)
-
Step 800
800
#354C84
oklch(42.7% 0.097 265.6)
-
Step 900
900 (this color)
#31436D
oklch(38.9% 0.075 265.5)
-
Step 950
950
#1B263E
oklch(27.1% 0.048 264.7)
#31436D 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) | #32476F | 0.012 |
| Deuteranopia (no green cones) | #2C416C | 0.010 |
| Tritanopia (no blue cones) | #144C52 | 0.068 |
| Achromatopsia (no color) | #444444 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31436D
#31436D
oklch(38.9% 0.075 265.5)
- #574107
#574107
oklch(38.9% 0.076 85.4)
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 #31436D, 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 0.039
- Light Navy #155084 ΔE 0.051
- Charcoal #264653 ΔE 0.052
- Cobalt #1E488F ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.059
- Marine Blue #01386A ΔE 0.059
- Prussian Blue #1D3557 ΔE 0.062
Use #31436D 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.