#3E57C1
Closest named color: Warm Blue (#4B57DB). oklch(49.9% 0.168 269.4), rgb(62, 87, 193).
Aa
White text reads best on this color (6.29:1).
About this color
#3E57C1 is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.168 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.044 away. White text reads best on it, at 6.29:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.33:1 |
| White text | 6.29:1 |
Values
| HEX | #3E57C1 |
| RGB | rgb(62, 87, 193) |
| HSL | hsl(229, 51%, 50%) |
| OKLCH | oklch(49.9% 0.168 269.4) |
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 #3E57C1 | 6.29:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #3E57C1 | 3.33:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #3E57C1 text on white | 6.29:1 | AA | Lc 80.9 | Fine for body text |
| #3E57C1 text on black | 3.33:1 | AA large text | Lc -20.9 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CDD9F8
oklch(88.6% 0.045 268.7)
-
Step 300
300
#ABBFF6
oklch(80.9% 0.081 269)
-
Step 400
400
#809CF2
oklch(70.8% 0.13 269.2)
-
Step 500
500
#6280ED
oklch(63.1% 0.167 269.6)
-
Step 600
600
#4A67DB
oklch(55.6% 0.18 269.2)
-
Step 700
700 (this color)
#3E57C1
oklch(49.9% 0.168 269.4)
-
Step 800
800
#31469A
oklch(42.7% 0.139 269.2)
-
Step 900
900
#2B3C7A
oklch(37.7% 0.107 269.2)
-
Step 950
950
#192348
oklch(26.9% 0.07 269.8)
#3E57C1 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) | #0066C5 | 0.047 |
| Deuteranopia (no green cones) | #005ABF | 0.039 |
| Tritanopia (no blue cones) | #007183 | 0.139 |
| Achromatopsia (no color) | #606060 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E57C1
#3E57C1
oklch(49.9% 0.168 269.4)
- #7A5F00
#7A5F00
oklch(49.9% 0.102 89.3)
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 #3E57C1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.044
- Iris #6258C4 ΔE 0.050
- Mid Blue #276AB3 ΔE 0.058
- Blue Blue #2242C7 ΔE 0.062
- Blue With A Hint Of Purple #533CC6 ΔE 0.062
- Royal Blue #4169E1 ΔE 0.065
- Dark Periwinkle #665FD1 ΔE 0.065
- Slate Blue #6A5ACD ΔE 0.066
Use #3E57C1 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.