#313647
Closest named color: Gunmetal (#293241). oklch(33.5% 0.031 271.9), rgb(49, 54, 71).
Aa
White text reads best on this color (12.00:1).
About this color
#313647 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.031 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.021 away. White text reads best on it, at 12.00:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.74:1 |
| White text | 12.00:1 |
Values
| HEX | #313647 |
| RGB | rgb(49, 54, 71) |
| HSL | hsl(226, 18%, 24%) |
| OKLCH | oklch(33.5% 0.031 271.9) |
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 #313647 | 12.00:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #313647 | 1.74:1 | Fails | Lc 0.0 | Not readable |
| #313647 text on white | 12.00:1 | AAA | Lc 97.5 | Preferred for body text |
| #313647 text on black | 1.74:1 | Fails | Lc 0.0 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E8EAEE
oklch(93.7% 0.006 264.5)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BBC0D0
oklch(80.9% 0.023 272)
-
Step 400
400
#98A0B8
oklch(70.7% 0.036 270.9)
-
Step 500
500
#7F88A7
oklch(63.1% 0.048 272.3)
-
Step 600
600
#687292
oklch(55.6% 0.051 271.2)
-
Step 700
700
#575F7C
oklch(49% 0.048 272.6)
-
Step 800
800
#474E65
oklch(42.7% 0.039 271.5)
-
Step 900
900 (this color)
#313647
oklch(33.5% 0.031 271.9)
-
Step 950
950
#232630
oklch(27% 0.019 272)
#313647 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) | #313748 | 0.003 |
| Deuteranopia (no green cones) | #2F3647 | 0.003 |
| Tritanopia (no blue cones) | #2B393C | 0.027 |
| Achromatopsia (no color) | #363636 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313647
#313647
oklch(33.5% 0.031 271.9)
- #3C3624
#3C3624
oklch(33.4% 0.031 91.8)
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 #313647, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.021
- Onyx #343A40 ΔE 0.022
- Dark Blue Grey #1F3B4D ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.040
- Midnight Green #073B4C ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.045
- Charcoal #264653 ΔE 0.051
Use #313647 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.