#157ED9
Closest named color: Water Blue (#0E87CC). oklch(58.6% 0.164 251.3), rgb(21, 126, 217).
Aa
Black text reads best on this color (5.01:1).
About this color
#157ED9 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.164 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.035 away. Black text reads best on it, at 5.01:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.01:1 |
| White text | 4.18:1 |
Values
| HEX | #157ED9 |
| RGB | rgb(21, 126, 217) |
| HSL | hsl(208, 82%, 47%) |
| OKLCH | oklch(58.6% 0.164 251.3) |
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 #157ED9 | 4.18:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #157ED9 | 5.01:1 | AA | Lc 35.8 | Non-text elements, placeholder text |
| #157ED9 text on white | 4.18:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #157ED9 text on black | 5.01:1 | AA | Lc -33.4 | 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 600.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E0EBF8
oklch(93.6% 0.021 252.5)
-
Step 200
200
#C6DCF4
oklch(88.6% 0.041 250.6)
-
Step 300
300
#9EC5EF
oklch(81% 0.073 250.6)
-
Step 400
400
#66A5E8
oklch(70.7% 0.118 251.2)
-
Step 500
500
#378CE1
oklch(63% 0.152 251.6)
-
Step 600
600 (this color)
#157ED9
oklch(58.6% 0.164 251.3)
-
Step 700
700
#0062AF
oklch(49.2% 0.144 251.3)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#0F4373
oklch(37.7% 0.098 251)
-
Step 950
950
#0B2744
oklch(26.9% 0.064 252.1)
#157ED9 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) | #4F85DD | 0.045 |
| Deuteranopia (no green cones) | #2B74D7 | 0.026 |
| Tritanopia (no blue cones) | #0094A1 | 0.120 |
| Achromatopsia (no color) | #7C7C7C | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #157ED9
#157ED9
oklch(58.6% 0.164 251.3)
- #AA6D00
#AA6D00
oklch(58.6% 0.126 71.1)
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 #157ED9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.035
- Windows Blue #3778BF ΔE 0.042
- Cerulean Blue #056EEE ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.057
- Clear Blue #247AFD ΔE 0.057
- Royal Blue #4169E1 ΔE 0.059
- Nice Blue #107AB0 ΔE 0.064
- Cool Blue #4984B8 ΔE 0.064
Use #157ED9 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.