#4557B2
Closest named color: Iris (#6258C4). oklch(49.2% 0.145 271.7), rgb(69, 87, 178).
Aa
White text reads best on this color (6.44:1).
About this color
#4557B2 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.145 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Iris (#6258C4), ΔE 0.051 away. White text reads best on it, at 6.44:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.145) |
| Temperature | cool |
| Nearest name | Iris (#6258C4) |
| Black text | 3.25:1 |
| White text | 6.44:1 |
Values
| HEX | #4557B2 |
| RGB | rgb(69, 87, 178) |
| HSL | hsl(230, 44%, 48%) |
| OKLCH | oklch(49.2% 0.145 271.7) |
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 #4557B2 | 6.44:1 | AA | Lc -86.8 | Fine for body text |
| Black text on #4557B2 | 3.25:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #4557B2 text on white | 6.44:1 | AA | Lc 81.7 | Fine for body text |
| #4557B2 text on black | 3.25:1 | AA large text | Lc -20.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F4
oklch(88.5% 0.04 272.9)
-
Step 300
300
#B0BFEF
oklch(81% 0.07 271.2)
-
Step 400
400
#889CE7
oklch(70.7% 0.112 271.9)
-
Step 500
500
#6B82E0
oklch(63.2% 0.144 271.4)
-
Step 600
600
#5469CD
oklch(55.6% 0.156 271.6)
-
Step 700
700 (this color)
#4557B2
oklch(49.2% 0.145 271.7)
-
Step 800
800
#394790
oklch(42.6% 0.121 272.2)
-
Step 900
900
#303D73
oklch(37.8% 0.093 271.1)
-
Step 950
950
#1C2443
oklch(27% 0.059 271.1)
#4557B2 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) | #2563B5 | 0.040 |
| Deuteranopia (no green cones) | #085AB0 | 0.046 |
| Tritanopia (no blue cones) | #006C7C | 0.125 |
| Achromatopsia (no color) | #5E5E5E | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4557B2
#4557B2
oklch(49.2% 0.145 271.7)
- #765E00
#765E00
oklch(49.2% 0.101 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 #4557B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Iris #6258C4 ΔE 0.051
- Mid Blue #276AB3 ΔE 0.054
- French Blue #436BAD ΔE 0.056
- Denim Blue #3B5B92 ΔE 0.056
- Dusky Blue #475F94 ΔE 0.057
- Twilight #4E518B ΔE 0.063
- Warm Blue #4B57DB ΔE 0.065
- Blueberry #464196 ΔE 0.069
Use #4557B2 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.