#3E99F2
Closest named color: Chefchaouen Blue (#4895EF). oklch(67.1% 0.158 251), rgb(62, 153, 242).
Aa
Black text reads best on this color (7.04:1).
About this color
#3E99F2 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.158 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.011 away. Black text reads best on it, at 7.04:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #3E99F2 |
| RGB | rgb(62, 153, 242) |
| HSL | hsl(210, 87%, 60%) |
| OKLCH | oklch(67.1% 0.158 251) |
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 #3E99F2 | 2.98:1 | Fails | Lc -61.4 | Content text, not long reading |
| Black text on #3E99F2 | 7.04:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #3E99F2 text on white | 2.98:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #3E99F2 text on black | 7.04:1 | AAA | Lc -45.7 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF6FE
oklch(97% 0.013 251.6)
-
Step 100
100
#DCECFD
oklch(93.6% 0.029 249.8)
-
Step 200
200
#BFDCFD
oklch(88.4% 0.055 251.8)
-
Step 300
300
#90C5FE
oklch(80.8% 0.098 250.9)
-
Step 400
400 (this color)
#3E99F2
oklch(67.1% 0.158 251)
-
Step 500
500
#008BF3
oklch(63.1% 0.184 251.1)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#004279
oklch(37.6% 0.11 251.3)
-
Step 950
950
#00274B
oklch(27% 0.079 251.1)
#3E99F2 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) | #709EF6 | 0.049 |
| Deuteranopia (no green cones) | #548EF0 | 0.031 |
| Tritanopia (no blue cones) | #00AEBA | 0.117 |
| Achromatopsia (no color) | #959595 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E99F2
#3E99F2
oklch(67.1% 0.158 251)
- #CC8400
#CC8400
oklch(67.2% 0.144 71.3)
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 #3E99F2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.011
- Cornflower Blue #6495ED ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.032
- Dodger Blue #1E90FF ΔE 0.038
- Soft Blue #6488EA ΔE 0.050
- Water Blue #0E87CC ΔE 0.077
- Periwinkle Blue #8F99FB ΔE 0.084
- Faded Blue #658CBB ΔE 0.085
Use #3E99F2 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.