#4351CB
Closest named color: Warm Blue (#4B57DB). oklch(49.8% 0.188 272.6), rgb(67, 81, 203).
Aa
White text reads best on this color (6.40:1).
About this color
#4351CB is a medium-dark, vivid blue. In OKLCH its lightness is 50%, its chroma 0.188 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.031 away. White text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.27:1 |
| White text | 6.40:1 |
Values
| HEX | #4351CB |
| RGB | rgb(67, 81, 203) |
| HSL | hsl(234, 57%, 53%) |
| OKLCH | oklch(49.8% 0.188 272.6) |
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 #4351CB | 6.40:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #4351CB | 3.27:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #4351CB text on white | 6.40:1 | AA | Lc 81.3 | Fine for body text |
| #4351CB text on black | 3.27:1 | AA large text | Lc -20.5 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CDD8FB
oklch(88.5% 0.05 271.6)
-
Step 300
300
#ACBDFC
oklch(80.8% 0.091 272.6)
-
Step 400
400
#8299FB
oklch(70.8% 0.146 272.2)
-
Step 500
500
#667BF8
oklch(63% 0.186 272.7)
-
Step 600
600
#5061E7
oklch(55.7% 0.202 272.5)
-
Step 700
700 (this color)
#4351CB
oklch(49.8% 0.188 272.6)
-
Step 800
800
#3541A2
oklch(42.6% 0.156 272.6)
-
Step 900
900
#2E3981
oklch(37.8% 0.121 272.7)
-
Step 950
950
#1A224B
oklch(27% 0.076 272.1)
#4351CB 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) | #0065CF | 0.057 |
| Deuteranopia (no green cones) | #0059C9 | 0.046 |
| Tritanopia (no blue cones) | #006F86 | 0.153 |
| Achromatopsia (no color) | #5F5F5F | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4351CB
#4351CB
oklch(49.8% 0.188 272.6)
- #776000
#776000
oklch(49.8% 0.102 92.4)
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 #4351CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.031
- Blue With A Hint Of Purple #533CC6 ΔE 0.047
- Iris #6258C4 ΔE 0.051
- Blurple #5539CC ΔE 0.051
- Bluey Purple #6241C7 ΔE 0.054
- Blue Blue #2242C7 ΔE 0.054
- Majorelle Blue #3F37C9 ΔE 0.055
- Azul #1D5DEC ΔE 0.062
Use #4351CB 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.