#3D5A99
Closest named color: Denim Blue (#3B5B92). oklch(47.6% 0.108 264.1), rgb(61, 90, 153).
Aa
White text reads best on this color (6.72:1).
About this color
#3D5A99 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.108 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.013 away. White text reads best on it, at 6.72:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #3D5A99 |
| RGB | rgb(61, 90, 153) |
| HSL | hsl(221, 43%, 42%) |
| OKLCH | oklch(47.6% 0.108 264.1) |
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 #3D5A99 | 6.72:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #3D5A99 | 3.12:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #3D5A99 text on white | 6.72:1 | AA | Lc 83.0 | Fine for body text |
| #3D5A99 text on black | 3.12:1 | AA large text | Lc -18.9 | 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 700.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#CFD9ED
oklch(88.4% 0.03 264.4)
-
Step 300
300
#B0C1E3
oklch(80.9% 0.052 264.2)
-
Step 400
400
#86A0D5
oklch(70.6% 0.083 264.1)
-
Step 500
500
#6888CA
oklch(63.1% 0.107 263.9)
-
Step 600
600
#5071B7
oklch(55.6% 0.116 263.9)
-
Step 700
700 (this color)
#3D5A99
oklch(47.6% 0.108 264.1)
-
Step 800
800
#364D80
oklch(42.7% 0.09 264.6)
-
Step 900
900
#2F4167
oklch(37.9% 0.069 264.1)
-
Step 950
950
#1B263C
oklch(27% 0.044 263.4)
#3D5A99 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) | #3F609B | 0.018 |
| Deuteranopia (no green cones) | #335898 | 0.013 |
| Tritanopia (no blue cones) | #006872 | 0.094 |
| Achromatopsia (no color) | #5C5C5C | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D5A99
#3D5A99
oklch(47.6% 0.108 264.1)
- #765700
#765700
oklch(47.6% 0.098 84.5)
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 #3D5A99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.013
- Dusky Blue #475F94 ΔE 0.023
- Light Navy Blue #2E5A88 ΔE 0.033
- Twilight #4E518B ΔE 0.035
- Denim #3B638C ΔE 0.037
- Dusk Blue #26538D ΔE 0.038
- Dusk #4E5481 ΔE 0.043
- Peacock Blue #016795 ΔE 0.050
Use #3D5A99 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.