#4557CA
Closest named color: Warm Blue (#4B57DB). oklch(51% 0.178 271.8), rgb(69, 87, 202).
Aa
White text reads best on this color (6.05:1).
About this color
#4557CA is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.178 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.028 away. White text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.178) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.46:1 |
| White text | 6.05:1 |
Values
| HEX | #4557CA |
| RGB | rgb(69, 87, 202) |
| HSL | hsl(232, 56%, 53%) |
| OKLCH | oklch(51% 0.178 271.8) |
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 #4557CA | 6.05:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #4557CA | 3.46:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #4557CA text on white | 6.05:1 | AA | Lc 79.8 | Fine for body text |
| #4557CA text on black | 3.46:1 | AA large text | Lc -22.0 | 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
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8FA
oklch(88.5% 0.048 272.4)
-
Step 300
300
#ADBEF9
oklch(81% 0.086 271.9)
-
Step 400
400
#829AF6
oklch(70.7% 0.137 271.4)
-
Step 500
500
#657DF3
oklch(63% 0.178 271.8)
-
Step 600
600
#4F63E1
oklch(55.6% 0.192 271.8)
-
Step 700
700 (this color)
#4557CA
oklch(51% 0.178 271.8)
-
Step 800
800
#35439E
oklch(42.6% 0.148 272)
-
Step 900
900
#2D3A7E
oklch(37.7% 0.116 271.6)
-
Step 950
950
#1A234A
oklch(27.1% 0.073 271.1)
#4557CA 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) | #0069CE | 0.055 |
| Deuteranopia (no green cones) | #005DC8 | 0.046 |
| Tritanopia (no blue cones) | #007388 | 0.147 |
| Achromatopsia (no color) | #636363 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4557CA
#4557CA
oklch(51% 0.178 271.8)
- #7C6300
#7C6300
oklch(51% 0.104 91.4)
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 #4557CA, closest first.
No curated palette has a color within ΔE 0.04 of #4557CA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.028
- Iris #6258C4 ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.053
- Royal Blue #4169E1 ΔE 0.054
- Slate Blue #6A5ACD ΔE 0.054
- Blue With A Hint Of Purple #533CC6 ΔE 0.059
- Neon Blue #4361EE ΔE 0.059
- Bluey Purple #6241C7 ΔE 0.059
Use #4557CA 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.