#1582DF
Closest named color: Water Blue (#0E87CC). oklch(59.9% 0.167 251.1), rgb(21, 130, 223).
Aa
Black text reads best on this color (5.29:1).
About this color
#1582DF is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.167 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 5.29:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.29:1 |
| White text | 3.96:1 |
Values
| HEX | #1582DF |
| RGB | rgb(21, 130, 223) |
| HSL | hsl(208, 83%, 48%) |
| OKLCH | oklch(59.9% 0.167 251.1) |
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 #1582DF | 3.96:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #1582DF | 5.29:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #1582DF text on white | 3.96:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #1582DF text on black | 5.29:1 | AA | Lc -35.2 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DFEBFA
oklch(93.6% 0.024 254)
-
Step 200
200
#C4DCF7
oklch(88.5% 0.045 251.4)
-
Step 300
300
#9AC5F4
oklch(81% 0.081 251.1)
-
Step 400
400
#5EA5EF
oklch(70.7% 0.131 251)
-
Step 500
500 (this color)
#1582DF
oklch(59.9% 0.167 251.1)
-
Step 600
600
#0075CE
oklch(55.7% 0.162 251.1)
-
Step 700
700
#0062AE
oklch(49.1% 0.143 251.1)
-
Step 800
800
#005090
oklch(42.7% 0.125 251.1)
-
Step 900
900
#014279
oklch(37.6% 0.11 251.5)
-
Step 950
950
#062747
oklch(26.9% 0.07 251.5)
#1582DF 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) | #5289E3 | 0.047 |
| Deuteranopia (no green cones) | #2D78DD | 0.026 |
| Tritanopia (no blue cones) | #0098A5 | 0.122 |
| Achromatopsia (no color) | #808080 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1582DF
#1582DF
oklch(59.9% 0.167 251.1)
- #AF7000
#AF7000
oklch(59.8% 0.129 70.8)
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 #1582DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.046
- Windows Blue #3778BF ΔE 0.052
- Clear Blue #247AFD ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.058
- Cerulean Blue #056EEE ΔE 0.060
- Royal Blue #4169E1 ΔE 0.065
- Soft Blue #6488EA ΔE 0.066
Use #1582DF 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.