#283347
Closest named color: Gunmetal (#293241). oklch(32% 0.039 262.1), rgb(40, 51, 71).
Aa
White text reads best on this color (12.69:1).
About this color
#283347 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.039 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.010 away. White text reads best on it, at 12.69:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.039) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.65:1 |
| White text | 12.69:1 |
Values
| HEX | #283347 |
| RGB | rgb(40, 51, 71) |
| HSL | hsl(219, 28%, 22%) |
| OKLCH | oklch(32% 0.039 262.1) |
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 #283347 | 12.69:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #283347 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #283347 text on white | 12.69:1 | AAA | Lc 98.7 | Preferred for body text |
| #283347 text on black | 1.65:1 | 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 950.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D0DAEB
oklch(88.6% 0.026 261.1)
-
Step 300
300
#B1C1DF
oklch(80.9% 0.046 263)
-
Step 400
400
#88A1CF
oklch(70.7% 0.073 262.4)
-
Step 500
500
#6A89C3
oklch(63% 0.095 262.4)
-
Step 600
600
#5272AF
oklch(55.5% 0.102 262.5)
-
Step 700
700
#426097
oklch(49.2% 0.096 261.8)
-
Step 800
800
#374E7A
oklch(42.6% 0.079 262.5)
-
Step 900
900
#2F4162
oklch(37.6% 0.062 262)
-
Step 950
950 (this color)
#283347
oklch(32% 0.039 262.1)
#283347 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) | #2C3448 | 0.007 |
| Deuteranopia (no green cones) | #293147 | 0.007 |
| Tritanopia (no blue cones) | #1E373A | 0.034 |
| Achromatopsia (no color) | #333333 | 0.039 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283347
#283347
oklch(32% 0.039 262.1)
- #3D311B
#3D311B
oklch(32% 0.039 81.8)
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 #283347, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.010
- Space Cadet #2B2D42 ΔE 0.019
- Dark Blue Grey #1F3B4D ΔE 0.026
- Prussian Blue #1D3557 ΔE 0.030
- Onyx #343A40 ΔE 0.036
- Midnight Green #073B4C ΔE 0.037
- Oxford Blue #1B263B ΔE 0.051
- Charcoal #264653 ΔE 0.061
Use #283347 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.