#3A4E7D
Closest named color: Dusk Blue (#26538D). oklch(43% 0.082 265.6), rgb(58, 78, 125).
Aa
White text reads best on this color (8.18:1).
About this color
#3A4E7D is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.082 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.032 away. White text reads best on it, at 8.18:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.56:1 |
| White text | 8.18:1 |
Values
| HEX | #3A4E7D |
| RGB | rgb(58, 78, 125) |
| HSL | hsl(222, 37%, 36%) |
| OKLCH | oklch(43% 0.082 265.6) |
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 #3A4E7D | 8.18:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #3A4E7D | 2.56:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #3A4E7D text on white | 8.18:1 | AAA | Lc 88.2 | Fine for body text |
| #3A4E7D text on black | 2.56:1 | Fails | Lc -14.0 | Not readable |
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 800.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#D1D9EB
oklch(88.5% 0.026 266.6)
-
Step 300
300
#B2C1E1
oklch(81% 0.048 265.4)
-
Step 400
400
#8AA0D1
oklch(70.7% 0.076 265.7)
-
Step 500
500
#6D88C5
oklch(63.1% 0.098 265.5)
-
Step 600
600
#5571B2
oklch(55.6% 0.107 265.4)
-
Step 700
700
#455E99
oklch(49% 0.1 265.5)
-
Step 800
800 (this color)
#3A4E7D
oklch(43% 0.082 265.6)
-
Step 900
900
#314064
oklch(37.6% 0.065 266.1)
-
Step 950
950
#1D263A
oklch(27% 0.04 265.3)
#3A4E7D 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) | #3C527F | 0.012 |
| Deuteranopia (no green cones) | #344C7C | 0.010 |
| Tritanopia (no blue cones) | #1A585F | 0.074 |
| Achromatopsia (no color) | #4F4F4F | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A4E7D
#3A4E7D
oklch(43% 0.082 265.6)
- #644C0C
#644C0C
oklch(43.1% 0.083 86)
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 #3A4E7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.032
- Light Navy #155084 ΔE 0.035
- Dusk #4E5481 ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.036
- Twilight #4E518B ΔE 0.038
- Deep Sea Blue #015482 ΔE 0.042
- YInMn Blue #415A77 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.046
Use #3A4E7D 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.