#3E7ABC
Closest named color: Windows Blue (#3778BF). oklch(57% 0.12 252.6), rgb(62, 122, 188).
Aa
Black text reads best on this color (4.71:1).
About this color
#3E7ABC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.120 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.010 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #3E7ABC |
| RGB | rgb(62, 122, 188) |
| HSL | hsl(211, 50%, 49%) |
| OKLCH | oklch(57% 0.12 252.6) |
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 #3E7ABC | 4.45:1 | AA large text | Lc -76.1 | Fine for body text |
| Black text on #3E7ABC | 4.71:1 | AA | Lc 33.4 | Non-text elements, placeholder text |
| #3E7ABC text on white | 4.45:1 | AA large text | Lc 70.7 | Content text, not long reading |
| #3E7ABC text on black | 4.71:1 | AA | Lc -31.0 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBED
oklch(88.6% 0.03 253)
-
Step 300
300
#A8C3E3
oklch(80.8% 0.054 252.8)
-
Step 400
400
#79A4D6
oklch(70.7% 0.087 252.7)
-
Step 500
500
#568DCA
oklch(63.2% 0.11 252.2)
-
Step 600
600 (this color)
#3E7ABC
oklch(57% 0.12 252.6)
-
Step 700
700
#2C639E
oklch(49.2% 0.111 252.4)
-
Step 800
800
#255180
oklch(42.8% 0.092 252.1)
-
Step 900
900
#234367
oklch(37.7% 0.073 252.7)
-
Step 950
950
#15283C
oklch(27.1% 0.045 250.9)
#3E7ABC 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) | #5D7EBF | 0.036 |
| Deuteranopia (no green cones) | #4B72BB | 0.023 |
| Tritanopia (no blue cones) | #008992 | 0.094 |
| Achromatopsia (no color) | #777777 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E7ABC
#3E7ABC
oklch(57% 0.12 252.6)
- #A26A06
#A26A06
oklch(57% 0.12 72.4)
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 #3E7ABC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.010
- Steel Blue #4682B4 ΔE 0.030
- Cool Blue #4984B8 ΔE 0.034
- Nice Blue #107AB0 ΔE 0.034
- Flat Blue #3C73A8 ΔE 0.034
- Water Blue #0E87CC ΔE 0.041
- French Blue #436BAD ΔE 0.044
- Off Blue #5684AE ΔE 0.048
Use #3E7ABC 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.