#5661B4
Closest named color: French Blue (#436BAD). oklch(52.4% 0.13 275.3), rgb(86, 97, 180).
Aa
White text reads best on this color (5.57:1).
About this color
#5661B4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.130 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.037 away. White text reads best on it, at 5.57:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.76:1 |
| White text | 5.57:1 |
Values
| HEX | #5661B4 |
| RGB | rgb(86, 97, 180) |
| HSL | hsl(233, 39%, 52%) |
| OKLCH | oklch(52.4% 0.13 275.3) |
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 #5661B4 | 5.57:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #5661B4 | 3.76:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #5661B4 text on white | 5.57:1 | AA | Lc 77.7 | Fine for body text |
| #5661B4 text on black | 3.76:1 | AA large text | Lc -24.1 | 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D3D8EF
oklch(88.5% 0.032 276)
-
Step 300
300
#B5BEE7
oklch(80.8% 0.059 275.3)
-
Step 400
400
#909CDB
oklch(70.7% 0.093 275.5)
-
Step 500
500
#7582D1
oklch(63% 0.12 275.3)
-
Step 600
600 (this color)
#5661B4
oklch(52.4% 0.13 275.3)
-
Step 700
700
#4E58A4
oklch(49% 0.121 275.4)
-
Step 800
800
#404985
oklch(42.8% 0.099 275)
-
Step 900
900
#363D6B
oklch(37.7% 0.079 275.4)
-
Step 950
950
#20243E
oklch(27% 0.049 276)
#5661B4 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) | #3D6CB7 | 0.038 |
| Deuteranopia (no green cones) | #3364B2 | 0.040 |
| Tritanopia (no blue cones) | #2D7382 | 0.114 |
| Achromatopsia (no color) | #686868 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5661B4
#5661B4
oklch(52.4% 0.13 275.3)
- #7E6900
#7E6900
oklch(52.6% 0.108 95.2)
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 #5661B4, closest first.
No curated palette has a color within ΔE 0.04 of #5661B4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.037
- Iris #6258C4 ΔE 0.039
- Mid Blue #276AB3 ΔE 0.050
- Dark Periwinkle #665FD1 ΔE 0.052
- Slate Blue #6A5ACD ΔE 0.053
- Dusky Blue #475F94 ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.058
- Flat Blue #3C73A8 ΔE 0.061
Use #5661B4 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.