#203DF4
Closest named color: Vibrant Blue (#0339F8). oklch(49% 0.267 266.5), rgb(32, 61, 244).
Aa
White text reads best on this color (6.91:1).
About this color
#203DF4 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.267 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Vibrant Blue (#0339F8), ΔE 0.017 away. White text reads best on it, at 6.91:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.267) |
| Temperature | cool |
| Nearest name | Vibrant Blue (#0339F8) |
| Black text | 3.03:1 |
| White text | 6.91:1 |
Values
| HEX | #203DF4 |
| RGB | rgb(32, 61, 244) |
| HSL | hsl(232, 91%, 54%) |
| OKLCH | oklch(49% 0.267 266.5) |
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 #203DF4 | 6.91:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #203DF4 | 3.03:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #203DF4 text on white | 6.91:1 | AA | Lc 82.5 | Fine for body text |
| #203DF4 text on black | 3.03:1 | AA large text | Lc -19.4 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4BFFF
oklch(80.8% 0.096 266.6)
-
Step 400
400
#759CFF
oklch(70.8% 0.151 266.4)
-
Step 500
500
#527EFF
oklch(63% 0.198 266.5)
-
Step 600
600
#325DFF
oklch(55.6% 0.244 266.4)
-
Step 700
700 (this color)
#203DF4
oklch(49% 0.267 266.5)
-
Step 800
800
#1A35C5
oklch(42.7% 0.221 266.5)
-
Step 900
900
#18329B
oklch(37.7% 0.173 266.4)
-
Step 950
950
#0E1F5B
oklch(27% 0.11 266.6)
#203DF4 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) | #0064F9 | 0.076 |
| Deuteranopia (no green cones) | #004FF1 | 0.031 |
| Tritanopia (no blue cones) | #007497 | 0.201 |
| Achromatopsia (no color) | #5A5A5A | 0.268 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #203DF4
#203DF4
oklch(49% 0.267 266.5)
- #795C00
#795C00
oklch(49.1% 0.1 87.1)
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 #203DF4, closest first.
No curated palette has a color within ΔE 0.04 of #203DF4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Vibrant Blue #0339F8 ΔE 0.017
- Vivid Blue #152EFF ΔE 0.027
- Light Royal Blue #3A2EFE ΔE 0.030
- Electric Blue #0652FF ΔE 0.042
- Rich Blue #021BF9 ΔE 0.048
- Strong Blue #0C06F7 ΔE 0.058
- Primary Blue #0804F9 ΔE 0.059
- Blue #0000FF ΔE 0.061
Use #203DF4 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.