#99BFE4
Closest named color: Light Cornflower Blue (#98C1D9). oklch(79% 0.067 248), rgb(153, 191, 228).
Aa
Black text reads best on this color (10.92:1).
About this color
#99BFE4 is a light, muted blue. In OKLCH its lightness is 79%, its chroma 0.067 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Light Cornflower Blue (#98C1D9), ΔE 0.019 away. Black text reads best on it, at 10.92:1.
| Hue family | Blues |
| Lightness | light (79%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Light Cornflower Blue (#98C1D9) |
| Black text | 10.92:1 |
| White text | 1.92:1 |
Values
| HEX | #99BFE4 |
| RGB | rgb(153, 191, 228) |
| HSL | hsl(210, 58%, 75%) |
| OKLCH | oklch(79% 0.067 248) |
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 #99BFE4 | 1.92:1 | Fails | Lc -41.0 | Non-text elements, placeholder text |
| Black text on #99BFE4 | 10.92:1 | AAA | Lc 67.2 | Content text, not long reading |
| #99BFE4 text on white | 1.92:1 | Fails | Lc 36.7 | Non-text elements, placeholder text |
| #99BFE4 text on black | 10.92:1 | AAA | Lc -65.7 | 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
#F1F6FB
oklch(97.1% 0.009 247.9)
-
Step 100
100
#E0EBF7
oklch(93.5% 0.02 250.4)
-
Step 200
200
#C7DCF1
oklch(88.5% 0.037 248.2)
-
Step 300
300 (this color)
#99BFE4
oklch(79% 0.067 248)
-
Step 400
400
#68A6E0
oklch(70.7% 0.107 248)
-
Step 500
500
#3A8FD7
oklch(63.2% 0.136 247.6)
-
Step 600
600
#0377C5
oklch(55.6% 0.149 248.1)
-
Step 700
700
#0064A7
oklch(49.1% 0.132 247.9)
-
Step 800
800
#01528A
oklch(42.8% 0.114 247.9)
-
Step 900
900
#11446E
oklch(37.7% 0.089 248.1)
-
Step 950
950
#0C2840
oklch(26.9% 0.056 247.6)
#99BFE4 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) | #B1BFE6 | 0.030 |
| Deuteranopia (no green cones) | #A7B7E3 | 0.026 |
| Tritanopia (no blue cones) | #81C8CB | 0.057 |
| Achromatopsia (no color) | #BBBBBB | 0.067 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99BFE4
#99BFE4
oklch(79% 0.067 248)
- #D8B38D
#D8B38D
oklch(79% 0.067 67.4)
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 #99BFE4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Cornflower Blue #98C1D9 ΔE 0.019
- Light Grey Blue #9DBCD4 ΔE 0.022
- Cloudy Blue #ACC2D9 ΔE 0.030
- Light Steel Blue #B0C4DE ΔE 0.034
- Lightblue #7BC8F6 ΔE 0.039
- Pastel Blue #A2BFFE ΔE 0.040
- Sky Blue #87CEEB ΔE 0.041
- Sky #82CAFC ΔE 0.042
Use #99BFE4 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.