#3E57CE
Closest named color: Warm Blue (#4B57DB). oklch(50.9% 0.186 269.6), rgb(62, 87, 206).
Aa
White text reads best on this color (6.07:1).
About this color
#3E57CE is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.186 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.026 away. White text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.45:1 |
| White text | 6.07:1 |
Values
| HEX | #3E57CE |
| RGB | rgb(62, 87, 206) |
| HSL | hsl(230, 60%, 53%) |
| OKLCH | oklch(50.9% 0.186 269.6) |
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 #3E57CE | 6.07:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #3E57CE | 3.45:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #3E57CE text on white | 6.07:1 | AA | Lc 79.8 | Fine for body text |
| #3E57CE text on black | 3.45:1 | AA large text | Lc -22.0 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FB
oklch(88.4% 0.05 270.4)
-
Step 300
300
#A9BEFC
oklch(80.8% 0.091 269.8)
-
Step 400
400
#7D9AFA
oklch(70.6% 0.144 269.7)
-
Step 500
500
#5F7EF7
oklch(63.1% 0.183 269.7)
-
Step 600
600
#4763E6
oklch(55.5% 0.2 269.6)
-
Step 700
700 (this color)
#3E57CE
oklch(50.9% 0.186 269.6)
-
Step 800
800
#2F43A2
oklch(42.6% 0.155 269.6)
-
Step 900
900
#293A80
oklch(37.6% 0.12 269.6)
-
Step 950
950
#18234B
oklch(27.1% 0.075 269.3)
#3E57CE 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) | #0069D2 | 0.050 |
| Deuteranopia (no green cones) | #005CCC | 0.037 |
| Tritanopia (no blue cones) | #00748A | 0.149 |
| Achromatopsia (no color) | #626262 | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E57CE
#3E57CE
oklch(50.9% 0.186 269.6)
- #7D6200
#7D6200
oklch(50.9% 0.104 89.8)
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 #3E57CE, closest first.
No curated palette has a color within ΔE 0.04 of #3E57CE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.026
- Iris #6258C4 ΔE 0.051
- Royal Blue #4169E1 ΔE 0.052
- Azul #1D5DEC ΔE 0.052
- Neon Blue #4361EE ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.060
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Blue Blue #2242C7 ΔE 0.062
Use #3E57CE 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.