#203E52
Closest named color: Dark Blue Grey (#1F3B4D). oklch(35% 0.05 239.5), rgb(32, 62, 82).
Aa
White text reads best on this color (11.21:1).
About this color
#203E52 is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.050 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Grey (#1F3B4D), ΔE 0.012 away. White text reads best on it, at 11.21:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Blue Grey (#1F3B4D) |
| Black text | 1.87:1 |
| White text | 11.21:1 |
Values
| HEX | #203E52 |
| RGB | rgb(32, 62, 82) |
| HSL | hsl(204, 44%, 22%) |
| OKLCH | oklch(35% 0.05 239.5) |
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 #203E52 | 11.21:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #203E52 | 1.87:1 | Fails | Lc 8.1 | Not readable |
| #203E52 text on white | 11.21:1 | AAA | Lc 95.8 | Preferred for body text |
| #203E52 text on black | 1.87:1 | 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
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CDDBE6
oklch(88.4% 0.021 241.4)
-
Step 300
300
#ABC5D7
oklch(81% 0.038 238.2)
-
Step 400
400
#7EA6C3
oklch(70.6% 0.061 240.2)
-
Step 500
500
#5C90B3
oklch(63.1% 0.077 239.1)
-
Step 600
600
#417A9F
oklch(55.7% 0.083 239.1)
-
Step 700
700
#326688
oklch(49% 0.078 239.7)
-
Step 800
800
#2B546F
oklch(42.8% 0.064 239.5)
-
Step 900
900 (this color)
#203E52
oklch(35% 0.05 239.5)
-
Step 950
950
#172934
oklch(27.1% 0.031 236.4)
#203E52 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) | #353E53 | 0.028 |
| Deuteranopia (no green cones) | #2E3952 | 0.023 |
| Tritanopia (no blue cones) | #004345 | 0.040 |
| Achromatopsia (no color) | #3B3B3B | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #203E52
#203E52
oklch(35% 0.05 239.5)
- #4E341F
#4E341F
oklch(35% 0.05 59.1)
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 #203E52, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Grey #1F3B4D ΔE 0.012
- Midnight Green #073B4C ΔE 0.026
- Charcoal #264653 ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.031
- Prussian Blue #1D3557 ΔE 0.034
- Onyx #343A40 ΔE 0.037
- Gunmetal #293241 ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.049
Use #203E52 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.