#99AECB
Closest named color: Cool Steel (#97A7B3). oklch(74.5% 0.048 256.5), rgb(153, 174, 203).
Aa
Black text reads best on this color (9.27:1).
About this color
#99AECB is a medium-light, muted blue. In OKLCH its lightness is 74%, its chroma 0.048 and its hue 256°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Steel (#97A7B3), ΔE 0.035 away. Black text reads best on it, at 9.27:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Cool Steel (#97A7B3) |
| Black text | 9.27:1 |
| White text | 2.26:1 |
Values
| HEX | #99AECB |
| RGB | rgb(153, 174, 203) |
| HSL | hsl(215, 32%, 70%) |
| OKLCH | oklch(74.5% 0.048 256.5) |
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 #99AECB | 2.26:1 | Fails | Lc -49.5 | Large or bold text, headings |
| Black text on #99AECB | 9.27:1 | AAA | Lc 59.3 | Large or bold text, headings |
| #99AECB text on white | 2.26:1 | Fails | Lc 44.7 | Non-text elements, placeholder text |
| #99AECB text on black | 9.27:1 | AAA | Lc -57.5 | 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
#F4F6F8
oklch(97.2% 0.003 247.9)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2DAE4
oklch(88.5% 0.016 253.9)
-
Step 300
300
#B4C2D4
oklch(80.9% 0.03 254.7)
-
Step 400
400 (this color)
#99AECB
oklch(74.5% 0.048 256.5)
-
Step 500
500
#718BAF
oklch(63% 0.062 256.6)
-
Step 600
600
#5A759A
oklch(55.6% 0.066 256.4)
-
Step 700
700
#496284
oklch(49.1% 0.063 256.2)
-
Step 800
800
#3C506B
oklch(42.6% 0.052 256.1)
-
Step 900
900
#344357
oklch(37.8% 0.04 255.8)
-
Step 950
950
#1E2733
oklch(27% 0.026 255.7)
#99AECB 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) | #A4AFCC | 0.015 |
| Deuteranopia (no green cones) | #9FAACA | 0.012 |
| Tritanopia (no blue cones) | #8CB4B7 | 0.042 |
| Achromatopsia (no color) | #ACACAC | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #99AECB
#99AECB
oklch(74.5% 0.048 256.5)
- #BEA98B
#BEA98B
oklch(74.5% 0.048 76.7)
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 #99AECB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Steel #97A7B3 ΔE 0.035
- Light Grey Blue #9DBCD4 ΔE 0.038
- French Gray #ADB5BD ΔE 0.042
- Dark Gray #A9A9A9 ΔE 0.049
- Light Cornflower Blue #98C1D9 ΔE 0.050
- Bluegrey #85A3B2 ΔE 0.052
- Bluey Grey #89A0B0 ΔE 0.054
- Cool Grey #95A3A6 ΔE 0.055
Use #99AECB 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.