#313445
Closest named color: Gunmetal (#293241). oklch(32.9% 0.03 276.8), rgb(49, 52, 69).
Aa
White text reads best on this color (12.29:1).
About this color
#313445 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.030 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.016 away. White text reads best on it, at 12.29:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.70:1 |
| White text | 12.29:1 |
Values
| HEX | #313445 |
| RGB | rgb(49, 52, 69) |
| HSL | hsl(231, 17%, 23%) |
| OKLCH | oklch(32.9% 0.03 276.8) |
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 #313445 | 12.29:1 | AAA | Lc -101.5 | Preferred for body text |
| Black text on #313445 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #313445 text on white | 12.29:1 | AAA | Lc 98.0 | Preferred for body text |
| #313445 text on black | 1.70:1 | 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
#E8E9EE
oklch(93.5% 0.007 277.2)
-
Step 200
200
#D7D8E2
oklch(88.4% 0.014 281.5)
-
Step 300
300
#BCC0D0
oklch(81% 0.023 274.7)
-
Step 400
400
#9A9FB8
oklch(70.7% 0.037 276.5)
-
Step 500
500
#8287A6
oklch(63% 0.047 277.8)
-
Step 600
600
#6B7191
oklch(55.6% 0.05 276.4)
-
Step 700
700
#595F7C
oklch(49.2% 0.047 275.4)
-
Step 800
800
#494D65
oklch(42.6% 0.04 277.2)
-
Step 900
900 (this color)
#313445
oklch(32.9% 0.03 276.8)
-
Step 950
950
#242630
oklch(27.1% 0.019 276.2)
#313445 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) | #2F3646 | 0.007 |
| Deuteranopia (no green cones) | #2E3445 | 0.005 |
| Tritanopia (no blue cones) | #2C373A | 0.027 |
| Achromatopsia (no color) | #353535 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #313445
#313445
oklch(32.9% 0.03 276.8)
- #3A3523
#3A3523
oklch(32.9% 0.03 94.4)
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 #313445, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.016
- Onyx #343A40 ΔE 0.025
- Space Cadet #2B2D42 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.041
- Midnight Green #073B4C ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.050
- Charcoal #264653 ΔE 0.057
Use #313445 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.