#3E79BC
Closest named color: Windows Blue (#3778BF). oklch(56.8% 0.121 253.2), rgb(62, 121, 188).
Aa
Black text reads best on this color (4.66:1).
About this color
#3E79BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.121 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.008 away. Black text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.66:1 |
| White text | 4.50:1 |
Values
| HEX | #3E79BC |
| RGB | rgb(62, 121, 188) |
| HSL | hsl(212, 50%, 49%) |
| OKLCH | oklch(56.8% 0.121 253.2) |
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 #3E79BC | 4.50:1 | AA | Lc -76.5 | Fine for body text |
| Black text on #3E79BC | 4.66:1 | AA | Lc 33.1 | Non-text elements, placeholder text |
| #3E79BC text on white | 4.50:1 | AA | Lc 71.0 | Content text, not long reading |
| #3E79BC text on black | 4.66:1 | AA | Lc -30.7 | 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
#A8C3E4
oklch(80.8% 0.055 253.6)
-
Step 400
400
#7AA4D6
oklch(70.7% 0.087 253.3)
-
Step 500
500
#568CCB
oklch(63% 0.112 253.3)
-
Step 600
600 (this color)
#3E79BC
oklch(56.8% 0.121 253.2)
-
Step 700
700
#2C629F
oklch(49.1% 0.114 253.5)
-
Step 800
800
#265080
oklch(42.6% 0.093 253.4)
-
Step 900
900
#244367
oklch(37.7% 0.072 253.4)
-
Step 950
950
#15273C
oklch(26.8% 0.046 253.2)
#3E79BC 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) | #5B7DBF | 0.034 |
| Deuteranopia (no green cones) | #4A71BB | 0.023 |
| Tritanopia (no blue cones) | #008991 | 0.097 |
| Achromatopsia (no color) | #777777 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E79BC
#3E79BC
oklch(56.8% 0.121 253.2)
- #A16A00
#A16A00
oklch(56.9% 0.121 73.5)
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 #3E79BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.008
- Steel Blue #4682B4 ΔE 0.033
- Flat Blue #3C73A8 ΔE 0.033
- Nice Blue #107AB0 ΔE 0.034
- Cool Blue #4984B8 ΔE 0.036
- French Blue #436BAD ΔE 0.041
- Water Blue #0E87CC ΔE 0.043
- Muted Blue #3B719F ΔE 0.047
Use #3E79BC 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.