#99BCEF
Closest named color: Pastel Blue (#A2BFFE). oklch(78.8% 0.082 257.7), rgb(153, 188, 239).
Aa
Black text reads best on this color (10.79:1).
About this color
#99BCEF is a light, moderately saturated blue. In OKLCH its lightness is 79%, its chroma 0.082 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Pastel Blue (#A2BFFE), ΔE 0.025 away. Black text reads best on it, at 10.79:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Pastel Blue (#A2BFFE) |
| Black text | 10.79:1 |
| White text | 1.94:1 |
Values
| HEX | #99BCEF |
| RGB | rgb(153, 188, 239) |
| HSL | hsl(216, 73%, 77%) |
| OKLCH | oklch(78.8% 0.082 257.7) |
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 #99BCEF | 1.94:1 | Fails | Lc -41.7 | Non-text elements, placeholder text |
| Black text on #99BCEF | 10.79:1 | AAA | Lc 66.6 | Content text, not long reading |
| #99BCEF text on white | 1.94:1 | Fails | Lc 37.3 | Non-text elements, placeholder text |
| #99BCEF text on black | 10.79:1 | AAA | Lc -65.1 | Content text, not long reading |
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 300.
-
Step 50
50
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E0EBFA
oklch(93.6% 0.024 256.1)
-
Step 200
200
#C7DBF8
oklch(88.6% 0.046 257.6)
-
Step 300
300 (this color)
#99BCEF
oklch(78.8% 0.082 257.7)
-
Step 400
400
#6AA2F2
oklch(70.8% 0.132 257.4)
-
Step 500
500
#4188ED
oklch(63.2% 0.168 257.7)
-
Step 600
600
#1D6FDB
oklch(55.6% 0.182 257.6)
-
Step 700
700
#0E5CBE
oklch(49.1% 0.169 257.6)
-
Step 800
800
#104C9A
oklch(42.8% 0.141 257.5)
-
Step 900
900
#16407A
oklch(37.7% 0.109 257.5)
-
Step 950
950
#0E2648
oklch(27% 0.07 257.6)
#99BCEF 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) | #AABEF1 | 0.023 |
| Deuteranopia (no green cones) | #A0B6EE | 0.017 |
| Tritanopia (no blue cones) | #7EC7CD | 0.073 |
| Achromatopsia (no color) | #BABABA | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BCEF
#99BCEF
oklch(78.8% 0.082 257.7)
- #D7B47D
#D7B47D
oklch(78.8% 0.082 78.4)
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 #99BCEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pastel Blue #A2BFFE ΔE 0.025
- Carolina Blue #8AB8FE ΔE 0.032
- Light Cornflower Blue #98C1D9 ΔE 0.039
- Light Grey Blue #9DBCD4 ΔE 0.039
- Lightblue #7BC8F6 ΔE 0.040
- Sky #82CAFC ΔE 0.041
- Cloudy Blue #ACC2D9 ΔE 0.046
- Light Steel Blue #B0C4DE ΔE 0.047
Use #99BCEF 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.