#A3AACA
Closest named color: Cool Steel (#97A7B3). oklch(74.3% 0.047 275.5), rgb(163, 170, 202).
Aa
Black text reads best on this color (9.16:1).
About this color
#A3AACA is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.047 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.038 away. Black text reads best on it, at 9.16:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.16:1 |
| White text | 2.29:1 |
Values
| HEX | #A3AACA |
| RGB | rgb(163, 170, 202) |
| HSL | hsl(229, 27%, 72%) |
| OKLCH | oklch(74.3% 0.047 275.5) |
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 #A3AACA | 2.29:1 | Fails | Lc -50.1 | Large or bold text, headings |
| Black text on #A3AACA | 9.16:1 | AAA | Lc 58.8 | Large or bold text, headings |
| #A3AACA text on white | 2.29:1 | Fails | Lc 45.2 | Large or bold text, headings |
| #A3AACA text on black | 9.16:1 | AAA | Lc -56.9 | Large or bold text, headings |
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 400.
-
Step 50
50
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E8E9F0
oklch(93.5% 0.009 279.7)
-
Step 200
200
#D6D8E4
oklch(88.4% 0.017 278.5)
-
Step 300
300
#BBC0D4
oklch(81% 0.029 274.6)
-
Step 400
400 (this color)
#A3AACA
oklch(74.3% 0.047 275.5)
-
Step 500
500
#7F87AE
oklch(63.1% 0.059 275.6)
-
Step 600
600
#68709A
oklch(55.5% 0.066 275.7)
-
Step 700
700
#575E83
oklch(49.1% 0.06 275.7)
-
Step 800
800
#474D6B
oklch(42.8% 0.05 275.3)
-
Step 900
900
#3B4057
oklch(37.7% 0.04 274.8)
-
Step 950
950
#232633
oklch(27.1% 0.025 274.5)
#A3AACA 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) | #A1ADCC | 0.008 |
| Deuteranopia (no green cones) | #9FAAC9 | 0.006 |
| Tritanopia (no blue cones) | #9AB0B4 | 0.043 |
| Achromatopsia (no color) | #ABABAB | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3AACA
#A3AACA
oklch(74.3% 0.047 275.5)
- #B5AC8B
#B5AC8B
oklch(74.3% 0.047 94.6)
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 #A3AACA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.038
- French Gray #ADB5BD ΔE 0.043
- Light Grey Blue #9DBCD4 ΔE 0.046
- Dark Gray #A9A9A9 ΔE 0.048
- Cool Grey #95A3A6 ΔE 0.057
- Bluegrey #85A3B2 ΔE 0.057
- Bluey Grey #89A0B0 ΔE 0.057
- Light Cornflower Blue #98C1D9 ΔE 0.059
Use #A3AACA 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.