#259BAC
Closest named color: Sea (#3C9992). oklch(63.5% 0.101 209.6), rgb(37, 155, 172).
Aa
Black text reads best on this color (6.36:1).
About this color
#259BAC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.101 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.038 away. Black text reads best on it, at 6.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.36:1 |
| White text | 3.30:1 |
Values
| HEX | #259BAC |
| RGB | rgb(37, 155, 172) |
| HSL | hsl(188, 65%, 41%) |
| OKLCH | oklch(63.5% 0.101 209.6) |
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 #259BAC | 3.30:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #259BAC | 6.36:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #259BAC text on white | 3.30:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #259BAC text on black | 6.36:1 | AA | Lc -41.7 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0EDEF
oklch(93.7% 0.014 207.9)
-
Step 200
200
#C5DFE3
oklch(88.6% 0.028 207.8)
-
Step 300
300
#9CCAD2
oklch(80.9% 0.049 209.3)
-
Step 400
400
#60AEBC
oklch(70.6% 0.079 210.4)
-
Step 500
500 (this color)
#259BAC
oklch(63.5% 0.101 209.6)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B54
oklch(37.8% 0.065 208.5)
-
Step 950
950
#062C32
oklch(27% 0.042 210.3)
#259BAC 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) | #8C95AD | 0.095 |
| Deuteranopia (no green cones) | #7A88AC | 0.087 |
| Tritanopia (no blue cones) | #00A3A0 | 0.035 |
| Achromatopsia (no color) | #8D8D8D | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #259BAC
#259BAC
oklch(63.5% 0.101 209.6)
- #C07266
#C07266
oklch(63.4% 0.101 29.5)
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 #259BAC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.038
- Teal Green #0A9396 ΔE 0.039
- Cadet Blue #5F9EA0 ΔE 0.046
- Persian Green #2A9D8F ΔE 0.047
- Blue Green #0F9B8E ΔE 0.048
- Blue NCS #118AB2 ΔE 0.056
- Dusty Teal #4C9085 ΔE 0.058
- Teal Blue #01889F ΔE 0.059
Use #259BAC 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.