#259EC1
Closest named color: Turquoise Blue (#06B1C4). oklch(65.1% 0.112 222.8), rgb(37, 158, 193).
Aa
Black text reads best on this color (6.73:1).
About this color
#259EC1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 65%, its chroma 0.112 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.054 away. Black text reads best on it, at 6.73:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.112) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 6.73:1 |
| White text | 3.11:1 |
Values
| HEX | #259EC1 |
| RGB | rgb(37, 158, 193) |
| HSL | hsl(193, 68%, 45%) |
| OKLCH | oklch(65.1% 0.112 222.8) |
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 #259EC1 | 3.11:1 | AA large text | Lc -63.1 | Content text, not long reading |
| Black text on #259EC1 | 6.73:1 | AA | Lc 46.3 | Large or bold text, headings |
| #259EC1 text on white | 3.11:1 | AA large text | Lc 57.7 | Large or bold text, headings |
| #259EC1 text on black | 6.73:1 | AA | Lc -44.0 | 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
#C4DEE8
oklch(88.5% 0.031 222.9)
-
Step 300
300
#9AC9DB
oklch(80.9% 0.055 223.4)
-
Step 400
400
#5DADC8
oklch(70.7% 0.088 222.3)
-
Step 500
500 (this color)
#259EC1
oklch(65.1% 0.112 222.8)
-
Step 600
600
#00809F
oklch(55.6% 0.103 222.6)
-
Step 700
700
#006B86
oklch(49% 0.091 223.1)
-
Step 800
800
#00586E
oklch(42.7% 0.079 222.3)
-
Step 900
900
#00495C
oklch(37.6% 0.07 222.6)
-
Step 950
950
#052B37
oklch(27% 0.046 223.9)
#259EC1 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) | #8A9AC3 | 0.089 |
| Deuteranopia (no green cones) | #758CC1 | 0.077 |
| Tritanopia (no blue cones) | #00A9A9 | 0.056 |
| Achromatopsia (no color) | #929292 | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #259EC1
#259EC1
oklch(65.1% 0.112 222.8)
- #C87756
#C87756
oklch(65% 0.112 42.6)
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 #259EC1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.054
- Cadet Blue #5F9EA0 ΔE 0.060
- Blue NCS #118AB2 ΔE 0.060
- Faded Blue #658CBB ΔE 0.063
- Greyblue #77A1B5 ΔE 0.068
- Sea #3C9992 ΔE 0.069
- Teal Green #0A9396 ΔE 0.069
- Dusty Blue #5A86AD ΔE 0.070
Use #259EC1 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.