#158DD0
Closest named color: Water Blue (#0E87CC). oklch(61.6% 0.139 241.4), rgb(21, 141, 208).
Aa
Black text reads best on this color (5.75:1).
About this color
#158DD0 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.139 and its hue 241°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.018 away. Black text reads best on it, at 5.75:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | moderately saturated (0.139) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.75:1 |
| White text | 3.65:1 |
Values
| HEX | #158DD0 |
| RGB | rgb(21, 141, 208) |
| HSL | hsl(201, 82%, 45%) |
| OKLCH | oklch(61.6% 0.139 241.4) |
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 #158DD0 | 3.65:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #158DD0 | 5.75:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #158DD0 text on white | 3.65:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #158DD0 text on black | 5.75:1 | AA | Lc -38.1 | 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
#F0F6FB
oklch(97% 0.009 242.8)
-
Step 100
100
#DFECF6
oklch(93.6% 0.019 240.7)
-
Step 200
200
#C4DDF0
oklch(88.5% 0.037 240.7)
-
Step 300
300
#9AC7E9
oklch(80.9% 0.068 241.3)
-
Step 400
400
#5DA9DE
oklch(70.7% 0.109 241)
-
Step 500
500 (this color)
#158DD0
oklch(61.6% 0.139 241.4)
-
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
#052940
oklch(26.9% 0.058 242)
#158DD0 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) | #6D8FD3 | 0.067 |
| Deuteranopia (no green cones) | #547FCF | 0.050 |
| Tritanopia (no blue cones) | #009EA5 | 0.093 |
| Achromatopsia (no color) | #868686 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #158DD0
#158DD0
oklch(61.6% 0.139 241.4)
- #BF6E0D
#BF6E0D
oklch(61.6% 0.139 61.4)
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 #158DD0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.018
- Dark Sky Blue #448EE4 ΔE 0.041
- Cool Blue #4984B8 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.046
- Steel Blue #4682B4 ΔE 0.049
- Windows Blue #3778BF ΔE 0.058
- Chefchaouen Blue #4895EF ΔE 0.060
- Off Blue #5684AE ΔE 0.061
Use #158DD0 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.