#3F7C94
Closest named color: Cerulean (#457B9D). oklch(55.5% 0.073 226.1), rgb(63, 124, 148).
Aa
White text reads best on this color (4.64:1).
About this color
#3F7C94 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.073 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.017 away. White text reads best on it, at 4.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.52:1 |
| White text | 4.64:1 |
Values
| HEX | #3F7C94 |
| RGB | rgb(63, 124, 148) |
| HSL | hsl(197, 40%, 41%) |
| OKLCH | oklch(55.5% 0.073 226.1) |
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 #3F7C94 | 4.64:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #3F7C94 | 4.52:1 | AA | Lc 32.0 | Non-text elements, placeholder text |
| #3F7C94 text on white | 4.64:1 | AA | Lc 72.1 | Content text, not long reading |
| #3F7C94 text on black | 4.52:1 | AA | Lc -29.6 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CDDCE2
oklch(88.5% 0.018 223.6)
-
Step 300
300
#ABC6D1
oklch(81% 0.033 224.3)
-
Step 400
400
#7EA8BA
oklch(70.7% 0.052 226.2)
-
Step 500
500
#5B92A9
oklch(63.1% 0.068 226.5)
-
Step 600
600 (this color)
#3F7C94
oklch(55.5% 0.073 226.1)
-
Step 700
700
#31697E
oklch(49.2% 0.067 225.3)
-
Step 800
800
#295567
oklch(42.6% 0.057 227.1)
-
Step 900
900
#264653
oklch(37.5% 0.044 226.2)
-
Step 950
950
#172931
oklch(26.9% 0.028 227.9)
#3F7C94 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) | #6F7A95 | 0.056 |
| Deuteranopia (no green cones) | #637094 | 0.051 |
| Tritanopia (no blue cones) | #008384 | 0.048 |
| Achromatopsia (no color) | #747474 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7C94
#3F7C94
oklch(55.5% 0.073 226.1)
- #97664E
#97664E
oklch(55.6% 0.073 46.9)
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 #3F7C94, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.017
- Stormy Blue #507B9C ΔE 0.023
- Metallic Blue #4F738E ΔE 0.028
- Dull Blue #49759C ΔE 0.029
- Ocean #017B92 ΔE 0.032
- Teal Blue #01889F ΔE 0.039
- Grey Blue #647D8E ΔE 0.041
- Muted Blue #3B719F ΔE 0.042
Use #3F7C94 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.