#3C59BB
Closest named color: Mid Blue (#276AB3). oklch(49.7% 0.158 267.8), rgb(60, 89, 187).
Aa
White text reads best on this color (6.28:1).
About this color
#3C59BB is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.158 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.050 away. White text reads best on it, at 6.28:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.158) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.33:1 |
| White text | 6.28:1 |
Values
| HEX | #3C59BB |
| RGB | rgb(60, 89, 187) |
| HSL | hsl(226, 51%, 48%) |
| OKLCH | oklch(49.7% 0.158 267.8) |
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 #3C59BB | 6.28:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #3C59BB | 3.33:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #3C59BB text on white | 6.28:1 | AA | Lc 81.0 | Fine for body text |
| #3C59BB text on black | 3.33:1 | AA large text | Lc -20.9 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ABC0F3
oklch(81% 0.076 267.3)
-
Step 400
400
#809DED
oklch(70.7% 0.122 268.1)
-
Step 500
500
#6182E7
oklch(63% 0.156 268.1)
-
Step 600
600
#4969D5
oklch(55.5% 0.17 268.1)
-
Step 700
700 (this color)
#3C59BB
oklch(49.7% 0.158 267.8)
-
Step 800
800
#304896
oklch(42.8% 0.131 267.7)
-
Step 900
900
#2A3D77
oklch(37.7% 0.102 267.7)
-
Step 950
950
#192446
oklch(27% 0.065 268.3)
#3C59BB 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) | #1A66BE | 0.038 |
| Deuteranopia (no green cones) | #005AB9 | 0.037 |
| Tritanopia (no blue cones) | #007081 | 0.129 |
| Achromatopsia (no color) | #606060 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C59BB
#3C59BB
oklch(49.7% 0.158 267.8)
- #7B5E00
#7B5E00
oklch(49.8% 0.102 87.6)
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 #3C59BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.050
- Iris #6258C4 ΔE 0.053
- Warm Blue #4B57DB ΔE 0.054
- French Blue #436BAD ΔE 0.058
- Denim Blue #3B5B92 ΔE 0.067
- Blue Blue #2242C7 ΔE 0.068
- Dusky Blue #475F94 ΔE 0.068
- Dark Periwinkle #665FD1 ΔE 0.069
Use #3C59BB 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.