#2857B8
Closest named color: Mid Blue (#276AB3). oklch(48.2% 0.162 262.5), rgb(40, 87, 184).
Aa
White text reads best on this color (6.67:1).
About this color
#2857B8 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.162 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.053 away. White text reads best on it, at 6.67:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.14:1 |
| White text | 6.67:1 |
Values
| HEX | #2857B8 |
| RGB | rgb(40, 87, 184) |
| HSL | hsl(220, 64%, 44%) |
| OKLCH | oklch(48.2% 0.162 262.5) |
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 #2857B8 | 6.67:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #2857B8 | 3.14:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #2857B8 text on white | 6.67:1 | AA | Lc 82.5 | Fine for body text |
| #2857B8 text on black | 3.14:1 | AA large text | Lc -19.4 | 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 700.
-
Step 50
50
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CADAF7
oklch(88.5% 0.044 262.4)
-
Step 300
300
#A6C1F4
oklch(80.9% 0.078 262.9)
-
Step 400
400
#769FEF
oklch(70.6% 0.126 262.9)
-
Step 500
500
#5385E9
oklch(63% 0.16 262.7)
-
Step 600
600
#386CD8
oklch(55.6% 0.175 262.7)
-
Step 700
700 (this color)
#2857B8
oklch(48.2% 0.162 262.5)
-
Step 800
800
#244A97
oklch(42.7% 0.134 262.5)
-
Step 900
900
#223F78
oklch(37.8% 0.103 262.3)
-
Step 950
950
#142546
oklch(26.9% 0.066 262.3)
#2857B8 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) | #1063BB | 0.031 |
| Deuteranopia (no green cones) | #0056B6 | 0.020 |
| Tritanopia (no blue cones) | #006F7F | 0.127 |
| Achromatopsia (no color) | #5C5C5C | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2857B8
#2857B8
oklch(48.2% 0.162 262.5)
- #795800
#795800
oklch(48.2% 0.099 83.2)
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 #2857B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.053
- Blue Blue #2242C7 ΔE 0.056
- Denim Blue #3B5B92 ΔE 0.066
- Warm Blue #4B57DB ΔE 0.067
- French Blue #436BAD ΔE 0.069
- Dusk Blue #26538D ΔE 0.070
- Dusky Blue #475F94 ΔE 0.073
- Iris #6258C4 ΔE 0.074
Use #2857B8 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.