#289ECC
Closest named color: Turquoise Blue (#06B1C4). oklch(65.7% 0.12 229.9), rgb(40, 158, 204).
Aa
Black text reads best on this color (6.85:1).
About this color
#289ECC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 66%, its chroma 0.120 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.059 away. Black text reads best on it, at 6.85:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (66%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 6.85:1 |
| White text | 3.06:1 |
Values
| HEX | #289ECC |
| RGB | rgb(40, 158, 204) |
| HSL | hsl(197, 67%, 48%) |
| OKLCH | oklch(65.7% 0.12 229.9) |
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 #289ECC | 3.06:1 | AA large text | Lc -62.5 | Content text, not long reading |
| Black text on #289ECC | 6.85:1 | AA | Lc 47.0 | Large or bold text, headings |
| #289ECC text on white | 3.06:1 | AA large text | Lc 57.1 | Large or bold text, headings |
| #289ECC text on black | 6.85:1 | AA | Lc -44.7 | 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
#F0F7FA
oklch(97.2% 0.008 225.1)
-
Step 100
100
#DFECF3
oklch(93.5% 0.017 230.9)
-
Step 200
200
#C4DEEB
oklch(88.5% 0.033 229.3)
-
Step 300
300
#9AC8DF
oklch(80.8% 0.058 230)
-
Step 400
400
#5DACD0
oklch(70.8% 0.094 229.6)
-
Step 500
500 (this color)
#289ECC
oklch(65.7% 0.12 229.9)
-
Step 600
600
#007EA7
oklch(55.5% 0.111 230)
-
Step 700
700
#006A8D
oklch(49.1% 0.098 229.8)
-
Step 800
800
#005774
oklch(42.7% 0.085 229.4)
-
Step 900
900
#004861
oklch(37.6% 0.075 229.8)
-
Step 950
950
#052B3A
oklch(27.1% 0.049 229.5)
#289ECC 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) | #869CCE | 0.082 |
| Deuteranopia (no green cones) | #718DCB | 0.070 |
| Tritanopia (no blue cones) | #00ABAD | 0.070 |
| Achromatopsia (no color) | #939393 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #289ECC
#289ECC
oklch(65.7% 0.12 229.9)
- #CB7A4A
#CB7A4A
oklch(65.7% 0.119 50.1)
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 #289ECC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.059
- Faded Blue #658CBB ΔE 0.061
- Dark Sky Blue #448EE4 ΔE 0.065
- Blue NCS #118AB2 ΔE 0.065
- Chefchaouen Blue #4895EF ΔE 0.067
- Water Blue #0E87CC ΔE 0.069
- Greyblue #77A1B5 ΔE 0.072
- Cool Blue #4984B8 ΔE 0.072
Use #289ECC 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.