#5A5FBD
Closest named color: Iris (#6258C4). oklch(52.9% 0.145 277.9), rgb(90, 95, 189).
Aa
White text reads best on this color (5.51:1).
About this color
#5A5FBD is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.145 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.023 away. White text reads best on it, at 5.51:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.80:1 |
| White text | 5.51:1 |
Values
| HEX | #5A5FBD |
| RGB | rgb(90, 95, 189) |
| HSL | hsl(237, 43%, 55%) |
| OKLCH | oklch(52.9% 0.145 277.9) |
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 #5A5FBD | 5.51:1 | AA | Lc -82.6 | Fine for body text |
| Black text on #5A5FBD | 3.80:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #5A5FBD text on white | 5.51:1 | AA | Lc 77.3 | Fine for body text |
| #5A5FBD text on black | 3.80:1 | AA large text | Lc -24.4 | 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
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D3D7F2
oklch(88.4% 0.037 278.9)
-
Step 300
300
#B6BDEB
oklch(80.9% 0.065 278.1)
-
Step 400
400
#919AE1
oklch(70.7% 0.104 277.8)
-
Step 500
500
#777FD8
oklch(63% 0.133 278)
-
Step 600
600 (this color)
#5A5FBD
oklch(52.9% 0.145 277.9)
-
Step 700
700
#5155AB
oklch(49.1% 0.135 278.2)
-
Step 800
800
#42468A
oklch(42.6% 0.111 278.1)
-
Step 900
900
#373B6F
oklch(37.6% 0.088 277.9)
-
Step 950
950
#202341
oklch(27% 0.056 277.7)
#5A5FBD 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) | #326DC0 | 0.052 |
| Deuteranopia (no green cones) | #2765BB | 0.054 |
| Tritanopia (no blue cones) | #2F7485 | 0.127 |
| Achromatopsia (no color) | #696969 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5A5FBD
#5A5FBD
oklch(52.9% 0.145 277.9)
- #7D6B00
#7D6B00
oklch(52.9% 0.109 97.5)
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 #5A5FBD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.023
- Dark Periwinkle #665FD1 ΔE 0.036
- Slate Blue #6A5ACD ΔE 0.037
- Light Indigo #6D5ACF ΔE 0.042
- French Blue #436BAD ΔE 0.051
- Warm Blue #4B57DB ΔE 0.056
- Mid Blue #276AB3 ΔE 0.061
- Royal Blue #4169E1 ΔE 0.063
Use #5A5FBD 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.