#31477D
Closest named color: Light Navy (#155084). oklch(40.8% 0.095 265.7), rgb(49, 71, 125).
Aa
White text reads best on this color (9.02:1).
About this color
#31477D is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.095 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.033 away. White text reads best on it, at 9.02:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #31477D |
| RGB | rgb(49, 71, 125) |
| HSL | hsl(223, 44%, 34%) |
| OKLCH | oklch(40.8% 0.095 265.7) |
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 #31477D | 9.02:1 | AAA | Lc -95.0 | Preferred for body text |
| Black text on #31477D | 2.32:1 | Fails | Lc 13.4 | Not readable |
| #31477D text on white | 9.02:1 | AAA | Lc 90.6 | Preferred for body text |
| #31477D text on black | 2.32:1 | Fails | Lc -11.8 | 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 800.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#B0C1E5
oklch(81% 0.054 265.2)
-
Step 400
400
#86A0D9
oklch(70.8% 0.089 265.3)
-
Step 500
500
#6987CE
oklch(63.1% 0.113 265.9)
-
Step 600
600
#5070BB
oklch(55.6% 0.123 265.2)
-
Step 700
700
#415DA1
oklch(49% 0.114 265.5)
-
Step 800
800 (this color)
#31477D
oklch(40.8% 0.095 265.7)
-
Step 900
900
#2F4069
oklch(37.8% 0.074 265.9)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#31477D 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) | #2F4D7F | 0.017 |
| Deuteranopia (no green cones) | #25467C | 0.015 |
| Tritanopia (no blue cones) | #00535C | 0.083 |
| Achromatopsia (no color) | #494949 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31477D
#31477D
oklch(40.8% 0.095 265.7)
- #5E4600
#5E4600
oklch(40.9% 0.084 86.2)
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 #31477D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.033
- Cobalt #1E488F ΔE 0.034
- Twilight Blue #0A437A ΔE 0.038
- Dusk Blue #26538D ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.045
- Dark Slate Blue #483D8B ΔE 0.049
- Blueberry #464196 ΔE 0.055
- Light Navy Blue #2E5A88 ΔE 0.056
Use #31477D 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.