#2F55A7
Closest named color: Denim Blue (#3B5B92). oklch(46.8% 0.139 263.3), rgb(47, 85, 167).
Aa
White text reads best on this color (7.05:1).
About this color
#2F55A7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.139 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.043 away. White text reads best on it, at 7.05:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #2F55A7 |
| RGB | rgb(47, 85, 167) |
| HSL | hsl(221, 56%, 42%) |
| OKLCH | oklch(46.8% 0.139 263.3) |
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 #2F55A7 | 7.05:1 | AAA | Lc -89.0 | Fine for body text |
| Black text on #2F55A7 | 2.97:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #2F55A7 text on white | 7.05:1 | AAA | Lc 84.1 | Fine for body text |
| #2F55A7 text on black | 2.97:1 | Fails | Lc -17.9 | 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
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF3
oklch(88.6% 0.038 262.1)
-
Step 300
300
#AAC1ED
oklch(80.9% 0.067 263.3)
-
Step 400
400
#7DA0E4
oklch(70.7% 0.108 263)
-
Step 500
500
#5D87DC
oklch(63.2% 0.137 263.2)
-
Step 600
600
#436FCA
oklch(55.7% 0.149 263)
-
Step 700
700 (this color)
#2F55A7
oklch(46.8% 0.139 263.3)
-
Step 800
800
#2C4B8D
oklch(42.5% 0.115 263.4)
-
Step 900
900
#284071
oklch(37.8% 0.089 263.1)
-
Step 950
950
#182642
oklch(27.2% 0.056 263.1)
#2F55A7 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) | #285EAA | 0.024 |
| Deuteranopia (no green cones) | #0253A5 | 0.028 |
| Tritanopia (no blue cones) | #006876 | 0.111 |
| Achromatopsia (no color) | #595959 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F55A7
#2F55A7
oklch(46.8% 0.139 263.3)
- #745400
#745400
oklch(46.7% 0.096 83)
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 #2F55A7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.043
- Dusk Blue #26538D ΔE 0.044
- Dusky Blue #475F94 ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.055
- Cobalt #1E488F ΔE 0.056
- Twilight #4E518B ΔE 0.057
- Mid Blue #276AB3 ΔE 0.058
- Blueberry #464196 ΔE 0.059
Use #2F55A7 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.