#3C5BDF
Closest named color: Warm Blue (#4B57DB). oklch(52.9% 0.204 268.3), rgb(60, 91, 223).
Aa
White text reads best on this color (5.59:1).
About this color
#3C5BDF is a medium-dark, vivid blue. In OKLCH its lightness is 53%, its chroma 0.204 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.019 away. White text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | vivid (0.204) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.75:1 |
| White text | 5.59:1 |
Values
| HEX | #3C5BDF |
| RGB | rgb(60, 91, 223) |
| HSL | hsl(229, 72%, 55%) |
| OKLCH | oklch(52.9% 0.204 268.3) |
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 #3C5BDF | 5.59:1 | AA | Lc -82.7 | Fine for body text |
| Black text on #3C5BDF | 3.75:1 | AA large text | Lc 26.7 | Dividers and decoration only |
| #3C5BDF text on white | 5.59:1 | AA | Lc 77.4 | Fine for body text |
| #3C5BDF text on black | 3.75:1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CBD9FC
oklch(88.6% 0.051 268.1)
-
Step 300
300
#A7BFFD
oklch(80.9% 0.092 268)
-
Step 400
400
#7A9BFC
oklch(70.7% 0.147 268.3)
-
Step 500
500
#5A7EF9
oklch(63% 0.188 268.3)
-
Step 600
600 (this color)
#3C5BDF
oklch(52.9% 0.204 268.3)
-
Step 700
700
#3551CA
oklch(49% 0.19 268.4)
-
Step 800
800
#2C44A3
oklch(42.8% 0.156 268.2)
-
Step 900
900
#273A81
oklch(37.6% 0.122 268.6)
-
Step 950
950
#17234C
oklch(27.1% 0.077 268.6)
#3C5BDF 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) | #0070E3 | 0.053 |
| Deuteranopia (no green cones) | #0060DC | 0.033 |
| Tritanopia (no blue cones) | #007C94 | 0.161 |
| Achromatopsia (no color) | #686868 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3C5BDF
#3C5BDF
oklch(52.9% 0.204 268.3)
- #856700
#856700
oklch(52.9% 0.108 88.5)
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 #3C5BDF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.019
- Neon Blue #4361EE ΔE 0.029
- Azul #1D5DEC ΔE 0.030
- Royal Blue #4169E1 ΔE 0.035
- Cerulean Blue #056EEE ΔE 0.051
- Bright Blue #0165FC ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.060
- Electric Blue #0652FF ΔE 0.062
Use #3C5BDF 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.