#A4DDEF
Closest named color: Light Blue (#ADD8E6). oklch(86.4% 0.063 219.3), rgb(164, 221, 239).
Aa
Black text reads best on this color (14.16:1).
About this color
#A4DDEF is a light, muted teal or cyan. In OKLCH its lightness is 86%, its chroma 0.063 and its hue 219°. Its hue sits on the cool side of the wheel. The nearest named color is Light Blue (#ADD8E6), ΔE 0.017 away. Black text reads best on it, at 14.16:1.
| Hue family | Teals and cyans |
| Lightness | light (86%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Light Blue (#ADD8E6) |
| Black text | 14.16:1 |
| White text | 1.48:1 |
Values
| HEX | #A4DDEF |
| RGB | rgb(164, 221, 239) |
| HSL | hsl(194, 70%, 79%) |
| OKLCH | oklch(86.4% 0.063 219.3) |
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 #A4DDEF | 1.48:1 | Fails | Lc -25.8 | Dividers and decoration only |
| Black text on #A4DDEF | 14.16:1 | AAA | Lc 81.0 | Fine for body text |
| #A4DDEF text on white | 1.48:1 | Fails | Lc 22.7 | Dividers and decoration only |
| #A4DDEF text on black | 14.16:1 | AAA | Lc -80.6 | Fine for body 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 200.
-
Step 50
50
#EEF7FA
oklch(97% 0.01 219.6)
-
Step 100
100
#DAEEF5
oklch(93.6% 0.023 220.7)
-
Step 200
200 (this color)
#A4DDEF
oklch(86.4% 0.063 219.3)
-
Step 300
300
#82CEE5
oklch(81% 0.082 219.1)
-
Step 400
400
#00B2D7
oklch(70.6% 0.128 219.8)
-
Step 500
500
#0099B8
oklch(63.1% 0.114 219)
-
Step 600
600
#00809B
oklch(55.5% 0.101 219.5)
-
Step 700
700
#006C83
oklch(49.1% 0.089 219.3)
-
Step 800
800
#00586C
oklch(42.6% 0.078 220.2)
-
Step 900
900
#004A5A
oklch(37.8% 0.068 218.5)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#A4DDEF 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) | #D1D9F0 | 0.054 |
| Deuteranopia (no green cones) | #C6D0EF | 0.050 |
| Tritanopia (no blue cones) | #8BE3E2 | 0.038 |
| Achromatopsia (no color) | #D4D4D4 | 0.063 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A4DDEF
#A4DDEF
oklch(86.4% 0.063 219.3)
- #F8C5B4
#F8C5B4
oklch(86.4% 0.063 39.2)
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 #A4DDEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Blue #ADD8E6 ΔE 0.017
- Powder Blue #B0E0E6 ΔE 0.021
- Celeste #A8DADC ΔE 0.025
- Robin's Egg Blue #98EFF9 ΔE 0.046
- Baby Blue #A2CFFE ΔE 0.049
- Pale Turquoise #AFEEEE ΔE 0.049
- Light Blue Grey #B7C9E2 ΔE 0.052
- Robin Egg Blue #8AF1FE ΔE 0.053
Use #A4DDEF 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.