#2291D1
Closest named color: Water Blue (#0E87CC). oklch(62.8% 0.134 240.6), rgb(34, 145, 209).
Aa
Black text reads best on this color (6.03:1).
About this color
#2291D1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.134 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.030 away. Black text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 6.03:1 |
| White text | 3.47:1 |
Values
| HEX | #2291D1 |
| RGB | rgb(34, 145, 209) |
| HSL | hsl(202, 72%, 48%) |
| OKLCH | oklch(62.8% 0.134 240.6) |
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 #2291D1 | 3.47:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #2291D1 | 6.03:1 | AA | Lc 42.2 | Non-text elements, placeholder text |
| #2291D1 text on white | 3.47:1 | AA large text | Lc 61.9 | Content text, not long reading |
| #2291D1 text on black | 6.03:1 | AA | Lc -39.8 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDEF
oklch(88.5% 0.036 239.2)
-
Step 300
300
#9BC7E7
oklch(80.9% 0.065 240.2)
-
Step 400
400
#5FA9DC
oklch(70.7% 0.105 240.6)
-
Step 500
500 (this color)
#2291D1
oklch(62.8% 0.134 240.6)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#00547F
oklch(42.6% 0.099 240.7)
-
Step 900
900
#00466B
oklch(37.7% 0.087 240.8)
-
Step 950
950
#06293F
oklch(26.9% 0.056 241.4)
#2291D1 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) | #7292D4 | 0.067 |
| Deuteranopia (no green cones) | #5B83D0 | 0.052 |
| Tritanopia (no blue cones) | #00A1A8 | 0.089 |
| Achromatopsia (no color) | #898989 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2291D1
#2291D1
oklch(62.8% 0.134 240.6)
- #C27220
#C27220
oklch(62.8% 0.135 60.3)
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 #2291D1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.038
- Cool Blue #4984B8 ΔE 0.048
- Blue NCS #118AB2 ΔE 0.050
- Chefchaouen Blue #4895EF ΔE 0.053
- Steel Blue #4682B4 ΔE 0.054
- Faded Blue #658CBB ΔE 0.056
- Off Blue #5684AE ΔE 0.062
Use #2291D1 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.