#0291B8
Closest named color: Blue NCS (#118AB2). oklch(61.1% 0.116 225.5), rgb(2, 145, 184).
Aa
Black text reads best on this color (5.74:1).
About this color
#0291B8 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 61%, its chroma 0.116 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.020 away. Black text reads best on it, at 5.74:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.74:1 |
| White text | 3.65:1 |
Values
| HEX | #0291B8 |
| RGB | rgb(2, 145, 184) |
| HSL | hsl(193, 98%, 36%) |
| OKLCH | oklch(61.1% 0.116 225.5) |
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 #0291B8 | 3.65:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #0291B8 | 5.74:1 | AA | Lc 40.6 | Non-text elements, placeholder text |
| #0291B8 text on white | 3.65:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #0291B8 text on black | 5.74:1 | AA | Lc -38.2 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF2
oklch(93.5% 0.016 227)
-
Step 200
200
#C4DEE9
oklch(88.5% 0.032 225.1)
-
Step 300
300
#9AC9DD
oklch(80.9% 0.057 225.9)
-
Step 400
400
#5CADCC
oklch(70.8% 0.091 225.3)
-
Step 500
500 (this color)
#0291B8
oklch(61.1% 0.116 225.5)
-
Step 600
600
#007FA2
oklch(55.5% 0.106 225.7)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005871
oklch(42.8% 0.081 225.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#042B38
oklch(27% 0.048 225.4)
#0291B8 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) | #7C8EBA | 0.088 |
| Deuteranopia (no green cones) | #677FB8 | 0.076 |
| Tritanopia (no blue cones) | #009C9E | 0.059 |
| Achromatopsia (no color) | #868686 | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0291B8
#0291B8
oklch(61.1% 0.116 225.5)
- #BC6B44
#BC6B44
oklch(61.1% 0.116 45.6)
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 #0291B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.020
- Teal Blue #01889F ΔE 0.042
- Cool Blue #4984B8 ΔE 0.046
- Water Blue #0E87CC ΔE 0.047
- Steel Blue #4682B4 ΔE 0.047
- Off Blue #5684AE ΔE 0.052
- Dusty Blue #5A86AD ΔE 0.052
- Teal Green #0A9396 ΔE 0.055
Use #0291B8 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.