#2F55C9
Closest named color: Warm Blue (#4B57DB). oklch(49.4% 0.186 265.9), rgb(47, 85, 201).
Aa
White text reads best on this color (6.43:1).
About this color
#2F55C9 is a medium-dark, vivid blue. In OKLCH its lightness is 49%, its chroma 0.186 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Warm Blue (#4B57DB), ΔE 0.043 away. White text reads best on it, at 6.43:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.186) |
| Temperature | cool |
| Nearest name | Warm Blue (#4B57DB) |
| Black text | 3.26:1 |
| White text | 6.43:1 |
Values
| HEX | #2F55C9 |
| RGB | rgb(47, 85, 201) |
| HSL | hsl(225, 62%, 49%) |
| OKLCH | oklch(49.4% 0.186 265.9) |
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 #2F55C9 | 6.43:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #2F55C9 | 3.26:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #2F55C9 text on white | 6.43:1 | AA | Lc 81.4 | Fine for body text |
| #2F55C9 text on black | 3.26:1 | AA large text | Lc -20.5 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E2EAFC
oklch(93.6% 0.026 266.6)
-
Step 200
200
#CAD9FB
oklch(88.5% 0.05 266.5)
-
Step 300
300
#A5C0FC
oklch(80.9% 0.09 265.7)
-
Step 400
400
#769DFA
oklch(70.8% 0.143 265.7)
-
Step 500
500
#5481F7
oklch(63.2% 0.183 265.7)
-
Step 600
600
#3B66E6
oklch(55.5% 0.2 265.9)
-
Step 700
700 (this color)
#2F55C9
oklch(49.4% 0.186 265.9)
-
Step 800
800
#2746A2
oklch(42.8% 0.154 265.9)
-
Step 900
900
#233C80
oklch(37.7% 0.119 265.7)
-
Step 950
950
#15244B
oklch(27.1% 0.075 265.8)
#2F55C9 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) | #0066CD | 0.043 |
| Deuteranopia (no green cones) | #0058C7 | 0.024 |
| Tritanopia (no blue cones) | #007287 | 0.145 |
| Achromatopsia (no color) | #5F5F5F | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F55C9
#2F55C9
oklch(49.4% 0.186 265.9)
- #7B5C00
#7B5C00
oklch(49.3% 0.101 85.6)
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 #2F55C9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Warm Blue #4B57DB ΔE 0.043
- Blue Blue #2242C7 ΔE 0.048
- Azul #1D5DEC ΔE 0.057
- Majorelle Blue #3F37C9 ΔE 0.062
- Blue With A Hint Of Purple #533CC6 ΔE 0.064
- Royal Blue #4169E1 ΔE 0.066
- Iris #6258C4 ΔE 0.067
- Mid Blue #276AB3 ΔE 0.068
Use #2F55C9 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.