#5859CB
Closest named color: Iris (#6258C4). oklch(52.6% 0.173 278.3), rgb(88, 89, 203).
Aa
White text reads best on this color (5.66:1).
About this color
#5859CB is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.173 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.018 away. White text reads best on it, at 5.66:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.173) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #5859CB |
| RGB | rgb(88, 89, 203) |
| HSL | hsl(239, 53%, 57%) |
| OKLCH | oklch(52.6% 0.173 278.3) |
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 #5859CB | 5.66:1 | AA | Lc -83.3 | Fine for body text |
| Black text on #5859CB | 3.70:1 | AA large text | Lc 26.1 | Dividers and decoration only |
| #5859CB text on white | 5.66:1 | AA | Lc 78.0 | Fine for body text |
| #5859CB text on black | 3.70:1 | AA large text | Lc -23.8 | 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
#F4F5FD
oklch(97.2% 0.011 280.5)
-
Step 100
100
#E6E9F9
oklch(93.6% 0.022 277.5)
-
Step 200
200
#D2D7F6
oklch(88.5% 0.043 278.2)
-
Step 300
300
#B5BCF3
oklch(80.9% 0.078 278.9)
-
Step 400
400
#8F98ED
oklch(70.7% 0.124 278.1)
-
Step 500
500
#757CE7
oklch(63.1% 0.159 278)
-
Step 600
600 (this color)
#5859CB
oklch(52.6% 0.173 278.3)
-
Step 700
700
#5051B9
oklch(49.2% 0.16 278.3)
-
Step 800
800
#414395
oklch(42.8% 0.132 278.2)
-
Step 900
900
#363977
oklch(37.6% 0.104 278.1)
-
Step 950
950
#202246
oklch(27.1% 0.066 278.6)
#5859CB 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) | #006CCF | 0.072 |
| Deuteranopia (no green cones) | #0062C9 | 0.068 |
| Tritanopia (no blue cones) | #167489 | 0.151 |
| Achromatopsia (no color) | #676767 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5859CB
#5859CB
oklch(52.6% 0.173 278.3)
- #7B6B00
#7B6B00
oklch(52.7% 0.109 98.9)
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 #5859CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.018
- Slate Blue #6A5ACD ΔE 0.028
- Dark Periwinkle #665FD1 ΔE 0.028
- Warm Blue #4B57DB ΔE 0.031
- Light Indigo #6D5ACF ΔE 0.033
- Royal Blue #4169E1 ΔE 0.053
- Bluey Purple #6241C7 ΔE 0.053
- Neon Blue #4361EE ΔE 0.060
Use #5859CB 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.