#31648E
Closest named color: Denim (#3B638C). oklch(48.8% 0.087 245.8), rgb(49, 100, 142).
Aa
White text reads best on this color (6.27:1).
About this color
#31648E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.087 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.010 away. White text reads best on it, at 6.27:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.34:1 |
| White text | 6.27:1 |
Values
| HEX | #31648E |
| RGB | rgb(49, 100, 142) |
| HSL | hsl(207, 49%, 37%) |
| OKLCH | oklch(48.8% 0.087 245.8) |
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 #31648E | 6.27:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #31648E | 3.34:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #31648E text on white | 6.27:1 | AA | Lc 81.1 | Fine for body text |
| #31648E text on black | 3.34:1 | AA large text | Lc -20.8 | Dividers and decoration only |
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 700.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ABC4DB
oklch(80.9% 0.042 246.1)
-
Step 400
400
#7EA5C9
oklch(70.7% 0.068 246.8)
-
Step 500
500
#5C8FBB
oklch(63.2% 0.086 245.8)
-
Step 600
600
#4078A7
oklch(55.5% 0.094 245.9)
-
Step 700
700 (this color)
#31648E
oklch(48.8% 0.087 245.8)
-
Step 800
800
#2A5374
oklch(42.8% 0.072 244.9)
-
Step 900
900
#27445E
oklch(37.6% 0.057 247)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#31648E 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) | #526590 | 0.038 |
| Deuteranopia (no green cones) | #455C8D | 0.029 |
| Tritanopia (no blue cones) | #006E73 | 0.066 |
| Achromatopsia (no color) | #606060 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31648E
#31648E
oklch(48.8% 0.087 245.8)
- #815523
#815523
oklch(48.8% 0.087 66.4)
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 #31648E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.010
- Peacock Blue #016795 ΔE 0.024
- Denim Blue #3B5B92 ΔE 0.029
- Dusky Blue #475F94 ΔE 0.030
- Light Navy Blue #2E5A88 ΔE 0.030
- Ocean Blue #03719C ΔE 0.041
- YInMn Blue #415A77 ΔE 0.042
- Muted Blue #3B719F ΔE 0.045
Use #31648E 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.