#31409C
Closest named color: Blueberry (#464196). oklch(41.6% 0.15 271.3), rgb(49, 64, 156).
Aa
White text reads best on this color (8.95:1).
About this color
#31409C is a dark, vivid blue. In OKLCH its lightness is 42%, its chroma 0.150 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.032 away. White text reads best on it, at 8.95:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Blueberry (#464196) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #31409C |
| RGB | rgb(49, 64, 156) |
| HSL | hsl(232, 52%, 40%) |
| OKLCH | oklch(41.6% 0.15 271.3) |
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 #31409C | 8.95:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #31409C | 2.34:1 | Fails | Lc 13.8 | Not readable |
| #31409C text on white | 8.95:1 | AAA | Lc 90.1 | Preferred for body text |
| #31409C text on black | 2.34:1 | Fails | Lc -12.2 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FB
oklch(93.5% 0.025 271.1)
-
Step 200
200
#CDD8FA
oklch(88.5% 0.048 271.2)
-
Step 300
300
#ACBEFA
oklch(80.9% 0.087 271.4)
-
Step 400
400
#819AF8
oklch(70.7% 0.141 271.2)
-
Step 500
500
#647DF4
oklch(63% 0.179 271.5)
-
Step 600
600
#4D63E3
oklch(55.6% 0.195 271.2)
-
Step 700
700
#3F51C5
oklch(49.1% 0.181 271.4)
-
Step 800
800 (this color)
#31409C
oklch(41.6% 0.15 271.3)
-
Step 900
900
#2C3A7F
oklch(37.7% 0.117 271.1)
-
Step 950
950
#1A234A
oklch(27.1% 0.073 271.1)
#31409C 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) | #004E9F | 0.044 |
| Deuteranopia (no green cones) | #00459A | 0.036 |
| Tritanopia (no blue cones) | #005767 | 0.124 |
| Achromatopsia (no color) | #494949 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31409C
#31409C
oklch(41.6% 0.15 271.3)
- #5D4A00
#5D4A00
oklch(41.7% 0.085 91.9)
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 #31409C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.032
- Cobalt #1E488F ΔE 0.035
- Sapphire #2138AB ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.043
- Dusk Blue #26538D ΔE 0.060
- Light Navy #155084 ΔE 0.065
- Twilight Blue #0A437A ΔE 0.068
- Blue Blue #2242C7 ΔE 0.070
Use #31409C 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.