#313648
Closest named color: Gunmetal (#293241). oklch(33.6% 0.033 272.5), rgb(49, 54, 72).
Aa
White text reads best on this color (11.98:1).
About this color
#313648 is a dark, muted blue. In OKLCH its lightness is 34%, its chroma 0.033 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.022 away. White text reads best on it, at 11.98:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.75:1 |
| White text | 11.98:1 |
Values
| HEX | #313648 |
| RGB | rgb(49, 54, 72) |
| HSL | hsl(227, 19%, 24%) |
| OKLCH | oklch(33.6% 0.033 272.5) |
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 #313648 | 11.98:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #313648 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #313648 text on white | 11.98:1 | AAA | Lc 97.5 | Preferred for body text |
| #313648 text on black | 1.75:1 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8EAEF
oklch(93.7% 0.007 268.5)
-
Step 200
200
#D6D9E2
oklch(88.6% 0.013 271.3)
-
Step 300
300
#BBC0D1
oklch(80.9% 0.024 272.8)
-
Step 400
400
#98A0BA
oklch(70.8% 0.039 271.9)
-
Step 500
500
#7F88A8
oklch(63.1% 0.049 272.6)
-
Step 600
600
#687294
oklch(55.7% 0.054 271.8)
-
Step 700
700
#575F7E
oklch(49.1% 0.051 273.2)
-
Step 800
800
#474E66
oklch(42.7% 0.041 271.9)
-
Step 900
900 (this color)
#313648
oklch(33.6% 0.033 272.5)
-
Step 950
950
#232631
oklch(27% 0.021 273)
#313648 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) | #313849 | 0.006 |
| Deuteranopia (no green cones) | #2F3648 | 0.003 |
| Tritanopia (no blue cones) | #2B393C | 0.029 |
| Achromatopsia (no color) | #373737 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313648
#313648
oklch(33.6% 0.033 272.5)
- #3D3723
#3D3723
oklch(33.7% 0.033 93.4)
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 #313648, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.022
- Onyx #343A40 ΔE 0.023
- Dark Blue Grey #1F3B4D ΔE 0.027
- Space Cadet #2B2D42 ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.038
- Midnight Green #073B4C ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.046
- Charcoal #264653 ΔE 0.051
Use #313648 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.