#203E9A
Closest named color: Sapphire (#2138AB). oklch(40.2% 0.155 265.8), rgb(32, 62, 154).
Aa
White text reads best on this color (9.47:1).
About this color
#203E9A is a dark, vivid blue. In OKLCH its lightness is 40%, its chroma 0.155 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.031 away. White text reads best on it, at 9.47:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 2.21:1 |
| White text | 9.47:1 |
Values
| HEX | #203E9A |
| RGB | rgb(32, 62, 154) |
| HSL | hsl(225, 66%, 36%) |
| OKLCH | oklch(40.2% 0.155 265.8) |
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 #203E9A | 9.47:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #203E9A | 2.21:1 | Fails | Lc 12.6 | Not readable |
| #203E9A text on white | 9.47:1 | AAA | Lc 91.4 | Preferred for body text |
| #203E9A text on black | 2.21:1 | Fails | Lc -11.0 | 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 800.
-
Step 50
50
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A5C0FC
oklch(80.9% 0.09 265.7)
-
Step 400
400
#769DFA
oklch(70.8% 0.143 265.7)
-
Step 500
500
#5480F8
oklch(63% 0.186 266.1)
-
Step 600
600
#3B66E7
oklch(55.6% 0.201 266)
-
Step 700
700
#2E54C9
oklch(49.2% 0.187 265.9)
-
Step 800
800 (this color)
#203E9A
oklch(40.2% 0.155 265.8)
-
Step 900
900
#233C81
oklch(37.8% 0.121 265.8)
-
Step 950
950
#14244B
oklch(27.1% 0.075 265)
#203E9A 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) | #004C9D | 0.037 |
| Deuteranopia (no green cones) | #004098 | 0.019 |
| Tritanopia (no blue cones) | #005566 | 0.120 |
| Achromatopsia (no color) | #464646 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #203E9A
#203E9A
oklch(40.2% 0.155 265.8)
- #5C4400
#5C4400
oklch(40.2% 0.082 85.6)
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 #203E9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.031
- Cobalt #1E488F ΔE 0.033
- Blueberry #464196 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.058
- Twilight Blue #0A437A ΔE 0.059
- Light Navy #155084 ΔE 0.065
- Dusk Blue #26538D ΔE 0.065
- Blue Blue #2242C7 ΔE 0.074
Use #203E9A 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.