#259CE2
Closest named color: Chefchaouen Blue (#4895EF). oklch(66.3% 0.143 241.1), rgb(37, 156, 226).
Aa
Black text reads best on this color (6.93:1).
About this color
#259CE2 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.143 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Chefchaouen Blue (#4895EF), ΔE 0.035 away. Black text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.143) |
| Temperature | cool |
| Nearest name | Chefchaouen Blue (#4895EF) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #259CE2 |
| RGB | rgb(37, 156, 226) |
| HSL | hsl(202, 77%, 52%) |
| OKLCH | oklch(66.3% 0.143 241.1) |
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 #259CE2 | 3.02:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #259CE2 | 6.93:1 | AA | Lc 47.5 | Large or bold text, headings |
| #259CE2 text on white | 3.02:1 | AA large text | Lc 56.6 | Large or bold text, headings |
| #259CE2 text on black | 6.93:1 | AA | Lc -45.2 | Large or bold text, headings |
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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DEECF6
oklch(93.6% 0.02 238.7)
-
Step 200
200
#C3DDF1
oklch(88.5% 0.039 241.1)
-
Step 300
300
#98C7EA
oklch(80.9% 0.07 240.9)
-
Step 400
400
#5AA9E0
oklch(70.7% 0.112 241.2)
-
Step 500
500 (this color)
#259CE2
oklch(66.3% 0.143 241.1)
-
Step 600
600
#007BB8
oklch(55.7% 0.13 241.1)
-
Step 700
700
#00679B
oklch(49.1% 0.115 241)
-
Step 800
800
#005480
oklch(42.6% 0.1 241.3)
-
Step 900
900
#00466C
oklch(37.7% 0.089 241.5)
-
Step 950
950
#032940
oklch(26.9% 0.059 241)
#259CE2 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) | #7B9DE5 | 0.070 |
| Deuteranopia (no green cones) | #618DE1 | 0.054 |
| Tritanopia (no blue cones) | #00ADB5 | 0.095 |
| Achromatopsia (no color) | #949494 | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #259CE2
#259CE2
oklch(66.3% 0.143 241.1)
- #D17B1F
#D17B1F
oklch(66.3% 0.144 60.9)
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 #259CE2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Chefchaouen Blue #4895EF ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.059
- Water Blue #0E87CC ΔE 0.064
- Soft Blue #6488EA ΔE 0.069
- Faded Blue #658CBB ΔE 0.072
- Cool Blue #4984B8 ΔE 0.080
Use #259CE2 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.