#233540
Closest named color: Gunmetal (#293241). oklch(31.8% 0.031 235.8), rgb(35, 53, 64).
Aa
White text reads best on this color (12.69:1).
About this color
#233540 is a dark, muted blue. In OKLCH its lightness is 32%, its chroma 0.031 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.013 away. White text reads best on it, at 12.69:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.65:1 |
| White text | 12.69:1 |
Values
| HEX | #233540 |
| RGB | rgb(35, 53, 64) |
| HSL | hsl(203, 29%, 19%) |
| OKLCH | oklch(31.8% 0.031 235.8) |
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 #233540 | 12.69:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #233540 | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #233540 text on white | 12.69:1 | AAA | Lc 98.7 | Preferred for body text |
| #233540 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDCE5
oklch(88.6% 0.02 233.9)
-
Step 300
300
#ABC5D5
oklch(80.9% 0.036 234.9)
-
Step 400
400
#7EA7C0
oklch(70.7% 0.058 235.4)
-
Step 500
500
#5C91B0
oklch(63.2% 0.073 235.3)
-
Step 600
600
#407B9C
oklch(55.7% 0.08 235.2)
-
Step 700
700
#316785
oklch(49% 0.075 235.4)
-
Step 800
800
#2A546C
oklch(42.6% 0.062 235.8)
-
Step 900
900
#274658
oklch(37.8% 0.048 235.5)
-
Step 950
950 (this color)
#233540
oklch(31.8% 0.031 235.8)
#233540 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) | #303541 | 0.020 |
| Deuteranopia (no green cones) | #2C3140 | 0.018 |
| Tritanopia (no blue cones) | #183839 | 0.023 |
| Achromatopsia (no color) | #333333 | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #233540
#233540
oklch(31.8% 0.031 235.8)
- #3F2E23
#3F2E23
oklch(31.7% 0.031 54.2)
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 #233540, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.013
- Dark Blue Grey #1F3B4D ΔE 0.026
- Space Cadet #2B2D42 ΔE 0.030
- Midnight Green #073B4C ΔE 0.031
- Onyx #343A40 ΔE 0.032
- Prussian Blue #1D3557 ΔE 0.042
- Oxford Blue #1B263B ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.058
Use #233540 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.