#3C57DE
Closest named color: Warm Blue (#4B57DB). oklch(52.1% 0.207 269.1), rgb(60, 87, 222).
Aa
White text reads best on this color (5.81:1).
About this color
#3C57DE is a medium-dark, vivid blue. In OKLCH its lightness is 52%, its chroma 0.207 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.018 away. White text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | vivid (0.207) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #3C57DE |
| RGB | rgb(60, 87, 222) |
| HSL | hsl(230, 71%, 55%) |
| OKLCH | oklch(52.1% 0.207 269.1) |
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 #3C57DE | 5.81:1 | AA | Lc -83.7 | Fine for body text |
| Black text on #3C57DE | 3.61:1 | AA large text | Lc 25.6 | Dividers and decoration only |
| #3C57DE text on white | 5.81:1 | AA | Lc 78.5 | Fine for body text |
| #3C57DE text on black | 3.61:1 | AA large text | Lc -23.3 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E2EAFE
oklch(93.7% 0.028 268.4)
-
Step 200
200
#CAD8FF
oklch(88.4% 0.056 269.7)
-
Step 300
300
#A7BEFF
oklch(80.8% 0.096 269.2)
-
Step 400
400
#7A9AFF
oklch(70.7% 0.152 269)
-
Step 500
500
#5A7CFF
oklch(63% 0.198 269.1)
-
Step 600
600
#425FF3
oklch(55.6% 0.223 269.2)
-
Step 700
700 (this color)
#3C57DE
oklch(52.1% 0.207 269.1)
-
Step 800
800
#2B40AB
oklch(42.6% 0.172 269.1)
-
Step 900
900
#263887
oklch(37.6% 0.134 269.2)
-
Step 950
950
#16224F
oklch(27% 0.084 268.9)
#3C57DE 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) | #006DE2 | 0.055 |
| Deuteranopia (no green cones) | #005EDB | 0.035 |
| Tritanopia (no blue cones) | #007A92 | 0.165 |
| Achromatopsia (no color) | #656565 | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C57DE
#3C57DE
oklch(52.1% 0.207 269.1)
- #826500
#826500
oklch(52.1% 0.106 88.9)
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 #3C57DE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.018
- Azul #1D5DEC ΔE 0.032
- Neon Blue #4361EE ΔE 0.035
- Royal Blue #4169E1 ΔE 0.044
- Bright Blue #0165FC ΔE 0.059
- Cerulean Blue #056EEE ΔE 0.059
- Electric Blue #0652FF ΔE 0.061
- Dark Periwinkle #665FD1 ΔE 0.064
Use #3C57DE 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.