#2B89B0
Closest named color: Blue NCS (#118AB2). oklch(59.3% 0.103 230.3), rgb(43, 137, 176).
Aa
Black text reads best on this color (5.30:1).
About this color
#2B89B0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.103 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.010 away. Black text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #2B89B0 |
| RGB | rgb(43, 137, 176) |
| HSL | hsl(198, 61%, 43%) |
| OKLCH | oklch(59.3% 0.103 230.3) |
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 #2B89B0 | 3.95:1 | AA large text | Lc -72.1 | Content text, not long reading |
| Black text on #2B89B0 | 5.30:1 | AA | Lc 37.5 | Non-text elements, placeholder text |
| #2B89B0 text on white | 3.95:1 | AA large text | Lc 66.6 | Content text, not long reading |
| #2B89B0 text on black | 5.30:1 | AA | Lc -35.1 | 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 600.
-
Step 50
50
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C9DDE7
oklch(88.6% 0.025 229.2)
-
Step 300
300
#A3C7D9
oklch(80.9% 0.046 229.7)
-
Step 400
400
#6EAAC6
oklch(70.7% 0.074 229.2)
-
Step 500
500
#4394B8
oklch(63.1% 0.095 230)
-
Step 600
600 (this color)
#2B89B0
oklch(59.3% 0.103 230.3)
-
Step 700
700
#076A8D
oklch(49.2% 0.096 230.4)
-
Step 800
800
#0F5672
oklch(42.6% 0.08 230.7)
-
Step 900
900
#17475C
oklch(37.6% 0.062 230.6)
-
Step 950
950
#0F2A36
oklch(27% 0.04 229.8)
#2B89B0 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) | #7587B2 | 0.071 |
| Deuteranopia (no green cones) | #637AAF | 0.061 |
| Tritanopia (no blue cones) | #009496 | 0.061 |
| Achromatopsia (no color) | #808080 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B89B0
#2B89B0
oklch(59.3% 0.103 230.3)
- #AF6B42
#AF6B42
oklch(59.4% 0.103 50.8)
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 #2B89B0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.010
- Steel Blue #4682B4 ΔE 0.028
- Cool Blue #4984B8 ΔE 0.030
- Teal Blue #01889F ΔE 0.032
- Off Blue #5684AE ΔE 0.035
- Dusty Blue #5A86AD ΔE 0.038
- Cerulean #457B9D ΔE 0.044
- Water Blue #0E87CC ΔE 0.046
Use #2B89B0 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.