#3E77A7
Closest named color: Flat Blue (#3C73A8). oklch(55.2% 0.096 246.1), rgb(62, 119, 167).
Aa
White text reads best on this color (4.77:1).
About this color
#3E77A7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.096 and its hue 246°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.013 away. White text reads best on it, at 4.77:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.40:1 |
| White text | 4.77:1 |
Values
| HEX | #3E77A7 |
| RGB | rgb(62, 119, 167) |
| HSL | hsl(207, 46%, 45%) |
| OKLCH | oklch(55.2% 0.096 246.1) |
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 #3E77A7 | 4.77:1 | AA | Lc -78.4 | Fine for body text |
| Black text on #3E77A7 | 4.40:1 | AA large text | Lc 31.2 | Non-text elements, placeholder text |
| #3E77A7 text on white | 4.77:1 | AA | Lc 72.9 | Content text, not long reading |
| #3E77A7 text on black | 4.40:1 | AA large text | Lc -28.8 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ABC4DC
oklch(80.9% 0.044 247.3)
-
Step 400
400
#7DA5CA
oklch(70.6% 0.07 246.9)
-
Step 500
500
#5B8FBC
oklch(63.2% 0.088 245.9)
-
Step 600
600 (this color)
#3E77A7
oklch(55.2% 0.096 246.1)
-
Step 700
700
#316590
oklch(49.1% 0.089 245.9)
-
Step 800
800
#295275
oklch(42.6% 0.075 246.5)
-
Step 900
900
#26445E
oklch(37.6% 0.058 246.2)
-
Step 950
950
#172837
oklch(26.9% 0.036 246.3)
#3E77A7 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) | #6278A9 | 0.041 |
| Deuteranopia (no green cones) | #546EA6 | 0.032 |
| Tritanopia (no blue cones) | #008288 | 0.074 |
| Achromatopsia (no color) | #737373 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E77A7
#3E77A7
oklch(55.2% 0.096 246.1)
- #98662E
#98662E
oklch(55.2% 0.096 66.4)
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 #3E77A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.013
- Dull Blue #49759C ΔE 0.019
- Muted Blue #3B719F ΔE 0.020
- Cerulean #457B9D ΔE 0.023
- Nice Blue #107AB0 ΔE 0.027
- Stormy Blue #507B9C ΔE 0.030
- Steel Blue #4682B4 ΔE 0.036
- Windows Blue #3778BF ΔE 0.037
Use #3E77A7 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.