#263143
Closest named color: Gunmetal (#293241). oklch(31.1% 0.036 260.1), rgb(38, 49, 67).
Aa
White text reads best on this color (13.10:1).
About this color
#263143 is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.036 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.007 away. White text reads best on it, at 13.10:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.60:1 |
| White text | 13.10:1 |
Values
| HEX | #263143 |
| RGB | rgb(38, 49, 67) |
| HSL | hsl(217, 28%, 21%) |
| OKLCH | oklch(31.1% 0.036 260.1) |
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 #263143 | 13.10:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #263143 | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #263143 text on white | 13.10:1 | AAA | Lc 99.4 | Preferred for body text |
| #263143 text on black | 1.60:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE9
oklch(88.5% 0.023 258.4)
-
Step 300
300
#B1C2DD
oklch(81% 0.043 259.6)
-
Step 400
400
#88A2CC
oklch(70.8% 0.068 259.9)
-
Step 500
500
#6A8ABE
oklch(63% 0.087 259.9)
-
Step 600
600
#5273AB
oklch(55.5% 0.096 260.5)
-
Step 700
700
#436192
oklch(49.2% 0.087 259.8)
-
Step 800
800
#374F77
oklch(42.7% 0.073 260.2)
-
Step 900
900
#304260
oklch(37.8% 0.057 260.3)
-
Step 950
950 (this color)
#263143
oklch(31.1% 0.036 260.1)
#263143 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) | #2B3244 | 0.009 |
| Deuteranopia (no green cones) | #282F43 | 0.007 |
| Tritanopia (no blue cones) | #1C3537 | 0.033 |
| Achromatopsia (no color) | #313131 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #263143
#263143
oklch(31.1% 0.036 260.1)
- #3A2F1B
#3A2F1B
oklch(31.2% 0.036 81.7)
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 #263143, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.007
- Space Cadet #2B2D42 ΔE 0.014
- Dark Blue Grey #1F3B4D ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.036
- Midnight Green #073B4C ΔE 0.040
- Onyx #343A40 ΔE 0.041
- Oxford Blue #1B263B ΔE 0.043
- Dark #1B2431 ΔE 0.054
Use #263143 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.