#3057AB
Closest named color: Denim Blue (#3B5B92). oklch(47.5% 0.142 263.3), rgb(48, 87, 171).
Aa
White text reads best on this color (6.82:1).
About this color
#3057AB is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.142 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.045 away. White text reads best on it, at 6.82:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.142) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 3.07:1 |
| White text | 6.82:1 |
Values
| HEX | #3057AB |
| RGB | rgb(48, 87, 171) |
| HSL | hsl(221, 56%, 43%) |
| OKLCH | oklch(47.5% 0.142 263.3) |
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 #3057AB | 6.82:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #3057AB | 3.07:1 | AA large text | Lc 20.8 | Dividers and decoration only |
| #3057AB text on white | 6.82:1 | AA | Lc 83.2 | Fine for body text |
| #3057AB text on black | 3.07:1 | AA large text | Lc -18.7 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#AAC1EE
oklch(80.9% 0.069 263.7)
-
Step 400
400
#7DA0E5
oklch(70.8% 0.109 263.3)
-
Step 500
500
#5C86DE
oklch(63% 0.141 263.6)
-
Step 600
600
#426ECC
oklch(55.6% 0.154 263.4)
-
Step 700
700 (this color)
#3057AB
oklch(47.5% 0.142 263.3)
-
Step 800
800
#2C4B8F
oklch(42.7% 0.118 263.7)
-
Step 900
900
#273F72
oklch(37.6% 0.092 263.6)
-
Step 950
950
#172543
oklch(26.9% 0.059 264)
#3057AB 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) | #2861AE | 0.027 |
| Deuteranopia (no green cones) | #0055A9 | 0.029 |
| Tritanopia (no blue cones) | #006B79 | 0.113 |
| Achromatopsia (no color) | #5B5B5B | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3057AB
#3057AB
oklch(47.5% 0.142 263.3)
- #775600
#775600
oklch(47.5% 0.098 82.7)
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 #3057AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.045
- Dusk Blue #26538D ΔE 0.051
- Mid Blue #276AB3 ΔE 0.051
- Dusky Blue #475F94 ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.059
- Twilight #4E518B ΔE 0.061
- French Blue #436BAD ΔE 0.062
- Cobalt #1E488F ΔE 0.064
Use #3057AB 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.