#2F57B6
Closest named color: Mid Blue (#276AB3). oklch(48.3% 0.157 264.2), rgb(47, 87, 182).
Aa
White text reads best on this color (6.64:1).
About this color
#2F57B6 is a medium-dark, vivid blue. In OKLCH its lightness is 48%, its chroma 0.157 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.052 away. White text reads best on it, at 6.64:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.15:1 |
| White text | 6.64:1 |
Values
| HEX | #2F57B6 |
| RGB | rgb(47, 87, 182) |
| HSL | hsl(222, 59%, 45%) |
| OKLCH | oklch(48.3% 0.157 264.2) |
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 #2F57B6 | 6.64:1 | AA | Lc -87.5 | Fine for body text |
| Black text on #2F57B6 | 3.15:1 | AA large text | Lc 21.6 | Dividers and decoration only |
| #2F57B6 text on white | 6.64:1 | AA | Lc 82.4 | Fine for body text |
| #2F57B6 text on black | 3.15:1 | AA large text | Lc -19.5 | 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
#E2EAF9
oklch(93.5% 0.022 263.2)
-
Step 200
200
#CBDAF6
oklch(88.6% 0.042 263)
-
Step 300
300
#A8C1F3
oklch(81% 0.076 264)
-
Step 400
400
#7A9FED
oklch(70.8% 0.122 264.2)
-
Step 500
500
#5885E7
oklch(63.2% 0.156 263.9)
-
Step 600
600
#3F6CD5
oklch(55.6% 0.169 264.2)
-
Step 700
700 (this color)
#2F57B6
oklch(48.3% 0.157 264.2)
-
Step 800
800
#294A95
oklch(42.8% 0.129 263.9)
-
Step 900
900
#253E77
oklch(37.6% 0.102 264.3)
-
Step 950
950
#162546
oklch(27.1% 0.065 264.1)
#2F57B6 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) | #1763B9 | 0.032 |
| Deuteranopia (no green cones) | #0057B4 | 0.026 |
| Tritanopia (no blue cones) | #006E7E | 0.125 |
| Achromatopsia (no color) | #5C5C5C | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F57B6
#2F57B6
oklch(48.3% 0.157 264.2)
- #795900
#795900
oklch(48.4% 0.099 84.2)
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 #2F57B6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.052
- Blue Blue #2242C7 ΔE 0.060
- Denim Blue #3B5B92 ΔE 0.062
- French Blue #436BAD ΔE 0.065
- Warm Blue #4B57DB ΔE 0.067
- Dusk Blue #26538D ΔE 0.068
- Dusky Blue #475F94 ΔE 0.068
- Iris #6258C4 ΔE 0.070
Use #2F57B6 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.