#259CC1
Closest named color: Blue NCS (#118AB2). oklch(64.6% 0.113 224.4), rgb(37, 156, 193).
Aa
Black text reads best on this color (6.60:1).
About this color
#259CC1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.113 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.055 away. Black text reads best on it, at 6.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.60:1 |
| White text | 3.17:1 |
Values
| HEX | #259CC1 |
| RGB | rgb(37, 156, 193) |
| HSL | hsl(194, 68%, 45%) |
| OKLCH | oklch(64.6% 0.113 224.4) |
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 #259CC1 | 3.17:1 | AA large text | Lc -63.9 | Content text, not long reading |
| Black text on #259CC1 | 6.60:1 | AA | Lc 45.5 | Large or bold text, headings |
| #259CC1 text on white | 3.17:1 | AA large text | Lc 58.5 | Large or bold text, headings |
| #259CC1 text on black | 6.60:1 | AA | Lc -43.2 | 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
#C5DEE8
oklch(88.5% 0.03 223.8)
-
Step 300
300
#9BC9DB
oklch(80.9% 0.055 223.9)
-
Step 400
400
#5EADCA
oklch(70.8% 0.088 224.2)
-
Step 500
500 (this color)
#259CC1
oklch(64.6% 0.113 224.4)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950
#052B37
oklch(27% 0.046 223.9)
#259CC1 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) | #8799C3 | 0.086 |
| Deuteranopia (no green cones) | #738AC1 | 0.076 |
| Tritanopia (no blue cones) | #00A7A8 | 0.058 |
| Achromatopsia (no color) | #909090 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #259CC1
#259CC1
oklch(64.6% 0.113 224.4)
- #C77652
#C77652
oklch(64.6% 0.114 44.3)
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 #259CC1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.055
- Faded Blue #658CBB ΔE 0.059
- Turquoise Blue #06B1C4 ΔE 0.059
- Cadet Blue #5F9EA0 ΔE 0.062
- Dusty Blue #5A86AD ΔE 0.066
- Cool Blue #4984B8 ΔE 0.067
- Teal Green #0A9396 ΔE 0.068
- Water Blue #0E87CC ΔE 0.068
Use #259CC1 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.