#3F7494
Closest named color: Dull Blue (#49759C). oklch(53.6% 0.076 237), rgb(63, 116, 148).
Aa
White text reads best on this color (5.07:1).
About this color
#3F7494 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.076 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Dull Blue (#49759C), ΔE 0.017 away. White text reads best on it, at 5.07:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Dull Blue (#49759C) |
| Black text | 4.13:1 |
| White text | 5.07:1 |
Values
| HEX | #3F7494 |
| RGB | rgb(63, 116, 148) |
| HSL | hsl(203, 40%, 41%) |
| OKLCH | oklch(53.6% 0.076 237) |
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 #3F7494 | 5.07:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #3F7494 | 4.13:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #3F7494 text on white | 5.07:1 | AA | Lc 74.9 | Content text, not long reading |
| #3F7494 text on black | 4.13:1 | AA large text | Lc -26.8 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBF0
oklch(93.6% 0.01 238.5)
-
Step 200
200
#CEDBE4
oklch(88.4% 0.019 237.8)
-
Step 300
300
#ADC4D4
oklch(80.8% 0.034 238.3)
-
Step 400
400
#81A6BF
oklch(70.7% 0.055 238.1)
-
Step 500
500
#6090AF
oklch(63.1% 0.07 237.7)
-
Step 600
600 (this color)
#3F7494
oklch(53.6% 0.076 237)
-
Step 700
700
#366784
oklch(49.2% 0.071 236.6)
-
Step 800
800
#2E546B
oklch(42.8% 0.058 236.8)
-
Step 900
900
#294557
oklch(37.6% 0.046 237.9)
-
Step 950
950
#192933
oklch(27.1% 0.028 236.7)
#3F7494 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) | #657396 | 0.045 |
| Deuteranopia (no green cones) | #596A93 | 0.039 |
| Tritanopia (no blue cones) | #007C7F | 0.058 |
| Achromatopsia (no color) | #6E6E6E | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7494
#3F7494
oklch(53.6% 0.076 237)
- #8F6240
#8F6240
oklch(53.6% 0.076 57.3)
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 #3F7494, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dull Blue #49759C ΔE 0.017
- Metallic Blue #4F738E ΔE 0.018
- Muted Blue #3B719F ΔE 0.022
- Cerulean #457B9D ΔE 0.024
- Stormy Blue #507B9C ΔE 0.031
- Sea Blue #047495 ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.033
- Ocean #017B92 ΔE 0.036
Use #3F7494 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.