#31415E
Closest named color: Dark Grey Blue (#29465B). oklch(37.5% 0.054 261.9), rgb(49, 65, 94).
Aa
White text reads best on this color (10.25:1).
About this color
#31415E is a dark, muted blue. In OKLCH its lightness is 37%, its chroma 0.054 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.020 away. White text reads best on it, at 10.25:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | muted (0.054) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.04:1 |
| White text | 10.25:1 |
Values
| HEX | #31415E |
| RGB | rgb(49, 65, 94) |
| HSL | hsl(219, 31%, 28%) |
| OKLCH | oklch(37.5% 0.054 261.9) |
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 #31415E | 10.25:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #31415E | 2.04:1 | Fails | Lc 10.2 | Not readable |
| #31415E text on white | 10.25:1 | AAA | Lc 93.7 | Preferred for body text |
| #31415E text on black | 2.04:1 | Fails | Lc -8.8 | 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 900.
-
Step 50
50
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1DAE9
oklch(88.6% 0.023 260.7)
-
Step 300
300
#B2C1DC
oklch(80.8% 0.042 262.3)
-
Step 400
400
#8AA1CA
oklch(70.6% 0.066 261.9)
-
Step 500
500
#6E8ABC
oklch(63.2% 0.082 261.7)
-
Step 600
600
#5673A8
oklch(55.6% 0.09 261.9)
-
Step 700
700
#466091
oklch(49.1% 0.085 262.4)
-
Step 800
800
#3A4F75
oklch(42.8% 0.069 261.7)
-
Step 900
900 (this color)
#31415E
oklch(37.5% 0.054 261.9)
-
Step 950
950
#1D2637
oklch(26.8% 0.034 262.7)
#31415E 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) | #36435F | 0.010 |
| Deuteranopia (no green cones) | #313F5D | 0.006 |
| Tritanopia (no blue cones) | #20474B | 0.048 |
| Achromatopsia (no color) | #414141 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31415E
#31415E
oklch(37.5% 0.054 261.9)
- #4F3E1D
#4F3E1D
oklch(37.4% 0.054 82.4)
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 #31415E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.020
- Charcoal #264653 ΔE 0.032
- Dark Blue Grey #1F3B4D ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.049
- Charcoal Grey #3C4142 ΔE 0.050
- Onyx #343A40 ΔE 0.051
- Twilight Blue #0A437A ΔE 0.056
- Midnight Green #073B4C ΔE 0.058
Use #31415E 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.