#2857BF
Closest named color: Blue Blue (#2242C7). oklch(48.7% 0.172 263.2), rgb(40, 87, 191).
Aa
White text reads best on this color (6.55:1).
About this color
#2857BF is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.172 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Blue Blue (#2242C7), ΔE 0.052 away. White text reads best on it, at 6.55:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Blue Blue (#2242C7) |
| Black text | 3.20:1 |
| White text | 6.55:1 |
Values
| HEX | #2857BF |
| RGB | rgb(40, 87, 191) |
| HSL | hsl(221, 65%, 45%) |
| OKLCH | oklch(48.7% 0.172 263.2) |
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 #2857BF | 6.55:1 | AA | Lc -87.0 | Fine for body text |
| Black text on #2857BF | 3.20:1 | AA large text | Lc 22.1 | Dividers and decoration only |
| #2857BF text on white | 6.55:1 | AA | Lc 81.9 | Fine for body text |
| #2857BF text on black | 3.20:1 | AA large text | Lc -20.0 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A5C1F7
oklch(80.9% 0.083 263.3)
-
Step 400
400
#749FF3
oklch(70.7% 0.132 262.8)
-
Step 500
500
#5184EF
oklch(63.1% 0.17 263.2)
-
Step 600
600
#366BDD
oklch(55.6% 0.184 263)
-
Step 700
700 (this color)
#2857BF
oklch(48.7% 0.172 263.2)
-
Step 800
800
#23499B
oklch(42.7% 0.141 263.1)
-
Step 900
900
#213E7C
oklch(37.8% 0.111 263.2)
-
Step 950
950
#142548
oklch(27.1% 0.069 263.1)
#2857BF 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) | #0065C3 | 0.036 |
| Deuteranopia (no green cones) | #0057BD | 0.019 |
| Tritanopia (no blue cones) | #007182 | 0.135 |
| Achromatopsia (no color) | #5D5D5D | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2857BF
#2857BF
oklch(48.7% 0.172 263.2)
- #7B5900
#7B5900
oklch(48.7% 0.1 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 #2857BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue Blue #2242C7 ΔE 0.052
- Mid Blue #276AB3 ΔE 0.057
- Warm Blue #4B57DB ΔE 0.058
- Majorelle Blue #3F37C9 ΔE 0.071
- Azul #1D5DEC ΔE 0.071
- Iris #6258C4 ΔE 0.072
- French Blue #436BAD ΔE 0.072
- Blue With A Hint Of Purple #533CC6 ΔE 0.073
Use #2857BF 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.