#31497E
Closest named color: Light Navy (#155084). oklch(41.3% 0.094 264.3), rgb(49, 73, 126).
Aa
White text reads best on this color (8.80:1).
About this color
#31497E is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.094 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.029 away. White text reads best on it, at 8.80:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.38:1 |
| White text | 8.80:1 |
Values
| HEX | #31497E |
| RGB | rgb(49, 73, 126) |
| HSL | hsl(221, 44%, 34%) |
| OKLCH | oklch(41.3% 0.094 264.3) |
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 #31497E | 8.80:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #31497E | 2.38:1 | Fails | Lc 14.0 | Not readable |
| #31497E text on white | 8.80:1 | AAA | Lc 90.0 | Fine for body text |
| #31497E text on black | 2.38:1 | Fails | Lc -12.3 | 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 800.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF5
oklch(93.6% 0.016 262.8)
-
Step 200
200
#CFD9EE
oklch(88.4% 0.031 265.3)
-
Step 300
300
#AFC1E5
oklch(80.9% 0.055 264.2)
-
Step 400
400
#85A0D8
oklch(70.7% 0.088 264.4)
-
Step 500
500
#6788CD
oklch(63.2% 0.111 264)
-
Step 600
600
#4F70BA
oklch(55.5% 0.122 264.6)
-
Step 700
700
#405EA1
oklch(49.2% 0.113 264.4)
-
Step 800
800 (this color)
#31497E
oklch(41.3% 0.094 264.3)
-
Step 900
900
#2E4068
oklch(37.6% 0.073 264.8)
-
Step 950
950
#1B263D
oklch(27% 0.046 264.1)
#31497E 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) | #324E80 | 0.015 |
| Deuteranopia (no green cones) | #28477D | 0.013 |
| Tritanopia (no blue cones) | #00555D | 0.083 |
| Achromatopsia (no color) | #4A4A4A | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31497E
#31497E
oklch(41.3% 0.094 264.3)
- #614700
#614700
oklch(41.5% 0.085 84.6)
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 #31497E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.029
- Cobalt #1E488F ΔE 0.034
- Dusk Blue #26538D ΔE 0.035
- Deep Sea Blue #015482 ΔE 0.041
- Twilight Blue #0A437A ΔE 0.041
- Light Navy Blue #2E5A88 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.051
- Twilight #4E518B ΔE 0.053
Use #31497E 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.