#203F52
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35.3% 0.05 237.3), rgb(32, 63, 82).
Aa
White text reads best on this color (11.08:1).
About this color
#203F52 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.050 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.014 away. White text reads best on it, at 11.08:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.89:1 |
| White text | 11.08:1 |
Values
| HEX | #203F52 |
| RGB | rgb(32, 63, 82) |
| HSL | hsl(203, 44%, 22%) |
| OKLCH | oklch(35.3% 0.05 237.3) |
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 #203F52 | 11.08:1 | AAA | Lc -99.3 | Preferred for body text |
| Black text on #203F52 | 1.89:1 | Fails | Lc 8.4 | Not readable |
| #203F52 text on white | 11.08:1 | AAA | Lc 95.5 | Preferred for body text |
| #203F52 text on black | 1.89:1 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CDDCE5
oklch(88.6% 0.02 233.9)
-
Step 300
300
#ABC5D6
oklch(80.9% 0.037 236.6)
-
Step 400
400
#7EA7C2
oklch(70.8% 0.06 237.6)
-
Step 500
500
#5B91B2
oklch(63.2% 0.076 236.5)
-
Step 600
600
#407A9E
oklch(55.6% 0.083 238)
-
Step 700
700
#316787
oklch(49.1% 0.077 237.2)
-
Step 800
800
#2A546E
oklch(42.7% 0.064 237.9)
-
Step 900
900 (this color)
#203F52
oklch(35.3% 0.05 237.3)
-
Step 950
950
#172934
oklch(27.1% 0.031 236.4)
#203F52 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) | #363F53 | 0.029 |
| Deuteranopia (no green cones) | #2F3952 | 0.026 |
| Tritanopia (no blue cones) | #004445 | 0.039 |
| Achromatopsia (no color) | #3C3C3C | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #203F52
#203F52
oklch(35.3% 0.05 237.3)
- #4F3420
#4F3420
oklch(35.2% 0.05 56.8)
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 #203F52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.014
- Charcoal #264653 ΔE 0.025
- Midnight Green #073B4C ΔE 0.027
- Dark Grey Blue #29465B ΔE 0.028
- Prussian Blue #1D3557 ΔE 0.037
- Onyx #343A40 ΔE 0.037
- Gunmetal #293241 ΔE 0.045
- Charcoal Grey #3C4142 ΔE 0.047
Use #203F52 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.