#3A7491
Closest named color: Metallic Blue (#4F738E). oklch(53.2% 0.076 232.4), rgb(58, 116, 145).
Aa
White text reads best on this color (5.13:1).
About this color
#3A7491 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.076 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Metallic Blue (#4F738E), ΔE 0.021 away. White text reads best on it, at 5.13:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Metallic Blue (#4F738E) |
| Black text | 4.08:1 |
| White text | 5.13:1 |
Values
| HEX | #3A7491 |
| RGB | rgb(58, 116, 145) |
| HSL | hsl(200, 43%, 40%) |
| OKLCH | oklch(53.2% 0.076 232.4) |
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 #3A7491 | 5.13:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #3A7491 | 4.08:1 | AA large text | Lc 28.8 | Dividers and decoration only |
| #3A7491 text on white | 5.13:1 | AA | Lc 75.2 | Fine for body text |
| #3A7491 text on black | 4.08:1 | AA large text | Lc -26.5 | 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
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ACC5D3
oklch(80.9% 0.034 232.3)
-
Step 400
400
#7FA7BD
oklch(70.7% 0.054 232.6)
-
Step 500
500
#5D91AD
oklch(63.1% 0.07 233)
-
Step 600
600 (this color)
#3A7491
oklch(53.2% 0.076 232.4)
-
Step 700
700
#336882
oklch(49.2% 0.07 231.9)
-
Step 800
800
#2B556A
oklch(42.8% 0.058 232.1)
-
Step 900
900
#274656
oklch(37.7% 0.046 232.3)
-
Step 950
950
#182932
oklch(27% 0.028 232.3)
#3A7491 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) | #667392 | 0.051 |
| Deuteranopia (no green cones) | #5A6A91 | 0.043 |
| Tritanopia (no blue cones) | #007C7E | 0.053 |
| Achromatopsia (no color) | #6D6D6D | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A7491
#3A7491
oklch(53.2% 0.076 232.4)
- #8F6042
#8F6042
oklch(53.2% 0.075 53)
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 #3A7491, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Metallic Blue #4F738E ΔE 0.021
- Dull Blue #49759C ΔE 0.024
- Muted Blue #3B719F ΔE 0.027
- Sea Blue #047495 ΔE 0.027
- Cerulean #457B9D ΔE 0.029
- Ocean #017B92 ΔE 0.031
- Ocean Blue #03719C ΔE 0.035
- Stormy Blue #507B9C ΔE 0.036
Use #3A7491 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.