#31444F
Closest named color: Charcoal (#264653). oklch(37.5% 0.031 234), rgb(49, 68, 79).
Aa
White text reads best on this color (10.14:1).
About this color
#31444F is a dark, muted blue. In OKLCH its lightness is 38%, its chroma 0.031 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.014 away. White text reads best on it, at 10.14:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 2.07:1 |
| White text | 10.14:1 |
Values
| HEX | #31444F |
| RGB | rgb(49, 68, 79) |
| HSL | hsl(202, 23%, 25%) |
| OKLCH | oklch(37.5% 0.031 234) |
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 #31444F | 10.14:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #31444F | 2.07:1 | Fails | Lc 10.4 | Not readable |
| #31444F text on white | 10.14:1 | AAA | Lc 93.5 | Preferred for body text |
| #31444F text on black | 2.07:1 | Fails | Lc -9.0 | 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
#F3F6F7
oklch(97.1% 0.003 219.5)
-
Step 100
100
#E6EBEE
oklch(93.7% 0.007 233.6)
-
Step 200
200
#D1DBE0
oklch(88.5% 0.013 228.9)
-
Step 300
300
#B3C3CD
oklch(80.8% 0.023 235.1)
-
Step 400
400
#8BA5B4
oklch(70.7% 0.036 233.3)
-
Step 500
500
#6E8FA2
oklch(63.2% 0.047 233.7)
-
Step 600
600
#55798D
oklch(55.7% 0.051 233.2)
-
Step 700
700
#456578
oklch(49% 0.048 235.1)
-
Step 800
800
#395361
oklch(42.7% 0.039 232.4)
-
Step 900
900 (this color)
#31444F
oklch(37.5% 0.031 234)
-
Step 950
950
#1D282F
oklch(27% 0.02 236.4)
#31444F 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) | #3F4350 | 0.021 |
| Deuteranopia (no green cones) | #3B404F | 0.018 |
| Tritanopia (no blue cones) | #274747 | 0.024 |
| Achromatopsia (no color) | #414141 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #31444F
#31444F
oklch(37.5% 0.031 234)
- #4E3D32
#4E3D32
oklch(37.5% 0.03 54.5)
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 #31444F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.014
- Dark Grey Blue #29465B ΔE 0.021
- Charcoal Grey #3C4142 ΔE 0.025
- Onyx #343A40 ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.036
- Dark Blue Grey #1F3B4D ΔE 0.040
- Dark Teal #014D4E ΔE 0.045
- Midnight Green #073B4C ΔE 0.054
Use #31444F 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.