#AEC5DF
Closest named color: Light Steel Blue (#B0C4DE). oklch(81.5% 0.045 251.6), rgb(174, 197, 223).
Aa
Black text reads best on this color (11.85:1).
About this color
#AEC5DF is a light, muted blue. In OKLCH its lightness is 81%, its chroma 0.045 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Steel Blue (#B0C4DE), ΔE 0.003 away. Black text reads best on it, at 11.85:1.
| Hue family | Blues |
| Lightness | light (81%) |
| Chroma | muted (0.045) |
| Temperature | cool |
| Nearest name | Light Steel Blue (#B0C4DE) |
| Black text | 11.85:1 |
| White text | 1.77:1 |
Values
| HEX | #AEC5DF |
| RGB | rgb(174, 197, 223) |
| HSL | hsl(212, 43%, 78%) |
| OKLCH | oklch(81.5% 0.045 251.6) |
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 #AEC5DF | 1.77:1 | Fails | Lc -36.6 | Non-text elements, placeholder text |
| Black text on #AEC5DF | 11.85:1 | AAA | Lc 71.3 | Content text, not long reading |
| #AEC5DF text on white | 1.77:1 | Fails | Lc 32.6 | Non-text elements, placeholder text |
| #AEC5DF text on black | 11.85:1 | AAA | Lc -70.1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300 (this color)
#AEC5DF
oklch(81.5% 0.045 251.6)
-
Step 400
400
#80A4CC
oklch(70.7% 0.071 251.5)
-
Step 500
500
#5F8DBF
oklch(63.1% 0.091 251.4)
-
Step 600
600
#4576AB
oklch(55.5% 0.099 251.7)
-
Step 700
700
#366393
oklch(49% 0.092 251.6)
-
Step 800
800
#2E5177
oklch(42.7% 0.076 251.8)
-
Step 900
900
#294360
oklch(37.6% 0.059 252.1)
-
Step 950
950
#182838
oklch(27.1% 0.037 249.3)
#AEC5DF 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) | #BCC5E0 | 0.018 |
| Deuteranopia (no green cones) | #B6C0DE | 0.016 |
| Tritanopia (no blue cones) | #A1CBCD | 0.039 |
| Achromatopsia (no color) | #C2C2C2 | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #AEC5DF
#AEC5DF
oklch(81.5% 0.045 251.6)
- #D5BEA4
#D5BEA4
oklch(81.4% 0.044 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 #AEC5DF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Steel Blue #B0C4DE ΔE 0.003
- Cloudy Blue #ACC2D9 ΔE 0.011
- Light Blue Grey #B7C9E2 ΔE 0.017
- Light Cornflower Blue #98C1D9 ΔE 0.031
- Light Grey Blue #9DBCD4 ΔE 0.035
- Baby Blue #A2CFFE ΔE 0.044
- Silver #C0C0C0 ΔE 0.045
- Sky Blue #87CEEB ΔE 0.046
Use #AEC5DF 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.