#2C91CF
Closest named color: Water Blue (#0E87CC). oklch(62.9% 0.129 241), rgb(44, 145, 207).
Aa
Black text reads best on this color (6.05:1).
About this color
#2C91CF is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.129 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.032 away. Black text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 6.05:1 |
| White text | 3.46:1 |
Values
| HEX | #2C91CF |
| RGB | rgb(44, 145, 207) |
| HSL | hsl(203, 65%, 49%) |
| OKLCH | oklch(62.9% 0.129 241) |
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 #2C91CF | 3.46:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #2C91CF | 6.05:1 | AA | Lc 42.3 | Non-text elements, placeholder text |
| #2C91CF text on white | 3.46:1 | AA large text | Lc 61.8 | Content text, not long reading |
| #2C91CF text on black | 6.05:1 | AA | Lc -39.9 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0ECF5
oklch(93.7% 0.018 240)
-
Step 200
200
#C5DDEF
oklch(88.5% 0.036 240.3)
-
Step 300
300
#9CC7E6
oklch(81% 0.063 239.9)
-
Step 400
400
#63A9DA
oklch(70.8% 0.101 240.7)
-
Step 500
500 (this color)
#2C91CF
oklch(62.9% 0.129 241)
-
Step 600
600
#007BB7
oklch(55.7% 0.129 240.7)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#06466A
oklch(37.7% 0.085 241.2)
-
Step 950
950
#09293E
oklch(27% 0.054 241.8)
#2C91CF 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) | #7492D2 | 0.065 |
| Deuteranopia (no green cones) | #5E83CE | 0.051 |
| Tritanopia (no blue cones) | #00A0A7 | 0.086 |
| Achromatopsia (no color) | #8A8A8A | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2C91CF
#2C91CF
oklch(62.9% 0.129 241)
- #C07427
#C07427
oklch(62.9% 0.129 61.1)
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 #2C91CF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.039
- Cool Blue #4984B8 ΔE 0.045
- Blue NCS #118AB2 ΔE 0.049
- Faded Blue #658CBB ΔE 0.051
- Steel Blue #4682B4 ΔE 0.051
- Chefchaouen Blue #4895EF ΔE 0.054
- Off Blue #5684AE ΔE 0.058
Use #2C91CF 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.