#1988E7
Closest named color: Dark Sky Blue (#448EE4). oklch(61.8% 0.17 250.9), rgb(25, 136, 231).
Aa
Black text reads best on this color (5.71:1).
About this color
#1988E7 is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.170 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.032 away. Black text reads best on it, at 5.71:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.170) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.71:1 |
| White text | 3.67:1 |
Values
| HEX | #1988E7 |
| RGB | rgb(25, 136, 231) |
| HSL | hsl(208, 81%, 50%) |
| OKLCH | oklch(61.8% 0.17 250.9) |
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 #1988E7 | 3.67:1 | AA large text | Lc -69.2 | Content text, not long reading |
| Black text on #1988E7 | 5.71:1 | AA | Lc 40.4 | Non-text elements, placeholder text |
| #1988E7 text on white | 3.67:1 | AA large text | Lc 63.7 | Content text, not long reading |
| #1988E7 text on black | 5.71:1 | AA | Lc -38.0 | 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
#F0F6FD
oklch(97.1% 0.011 252.1)
-
Step 100
100
#DEEBFA
oklch(93.5% 0.025 251.9)
-
Step 200
200
#C3DCF7
oklch(88.5% 0.046 250.4)
-
Step 300
300
#99C5F5
oklch(80.9% 0.083 251)
-
Step 400
400
#5CA5F0
oklch(70.7% 0.133 250.8)
-
Step 500
500 (this color)
#1988E7
oklch(61.8% 0.17 250.9)
-
Step 600
600
#0075CD
oklch(55.6% 0.161 250.9)
-
Step 700
700
#0062AD
oklch(49.1% 0.142 250.8)
-
Step 800
800
#00508F
oklch(42.6% 0.123 250.8)
-
Step 900
900
#004379
oklch(37.8% 0.109 250.7)
-
Step 950
950
#052747
oklch(26.9% 0.071 251)
#1988E7 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) | #588FEB | 0.049 |
| Deuteranopia (no green cones) | #337DE5 | 0.029 |
| Tritanopia (no blue cones) | #009FAC | 0.124 |
| Achromatopsia (no color) | #858585 | 0.170 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1988E7
#1988E7
oklch(61.8% 0.17 250.9)
- #B77500
#B77500
oklch(61.8% 0.133 70.6)
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 #1988E7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.032
- Dodger Blue #1E90FF ΔE 0.040
- Water Blue #0E87CC ΔE 0.042
- Chefchaouen Blue #4895EF ΔE 0.049
- Clear Blue #247AFD ΔE 0.052
- Soft Blue #6488EA ΔE 0.056
- Windows Blue #3778BF ΔE 0.068
- Cornflower Blue #6495ED ΔE 0.069
Use #1988E7 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.