#899CB0
Closest named color: Cool Gray (#8D99AE). oklch(68.5% 0.037 249.7), rgb(137, 156, 176).
Aa
Black text reads best on this color (7.44:1).
About this color
#899CB0 is a medium-light, muted blue. In OKLCH its lightness is 68%, its chroma 0.037 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.009 away. Black text reads best on it, at 7.44:1.
| Hue family | Blues |
| Lightness | medium-light (68%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.44:1 |
| White text | 2.82:1 |
Values
| HEX | #899CB0 |
| RGB | rgb(137, 156, 176) |
| HSL | hsl(211, 20%, 61%) |
| OKLCH | oklch(68.5% 0.037 249.7) |
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 #899CB0 | 2.82:1 | Fails | Lc -59.5 | Large or bold text, headings |
| Black text on #899CB0 | 7.44:1 | AAA | Lc 49.8 | Large or bold text, headings |
| #899CB0 text on white | 2.82:1 | Fails | Lc 54.2 | Large or bold text, headings |
| #899CB0 text on black | 7.44:1 | AAA | Lc -47.6 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D3DAE1
oklch(88.5% 0.012 248)
-
Step 300
300
#B6C2CF
oklch(80.9% 0.023 250.3)
-
Step 400
400 (this color)
#899CB0
oklch(68.5% 0.037 249.7)
-
Step 500
500
#748CA5
oklch(63% 0.047 249.6)
-
Step 600
600
#5D7690
oklch(55.6% 0.05 249.7)
-
Step 700
700
#4C637B
oklch(49.1% 0.048 249.9)
-
Step 800
800
#3F5164
oklch(42.8% 0.039 250.1)
-
Step 900
900
#354351
oklch(37.6% 0.03 248.6)
-
Step 950
950
#1F2730
oklch(26.9% 0.02 251.6)
#899CB0 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) | #959CB1 | 0.016 |
| Deuteranopia (no green cones) | #9098B0 | 0.014 |
| Tritanopia (no blue cones) | #7FA0A2 | 0.030 |
| Achromatopsia (no color) | #9A9A9A | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #899CB0
#899CB0
oklch(68.5% 0.037 249.7)
- #A99682
#A99682
oklch(68.4% 0.036 68.6)
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 #899CB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.009
- Bluey Grey #89A0B0 ΔE 0.011
- Bluegrey #85A3B2 ΔE 0.019
- Greyblue #77A1B5 ΔE 0.024
- Cool Grey #95A3A6 ΔE 0.033
- Cool Steel #97A7B3 ΔE 0.037
- Pewter #96A8A1 ΔE 0.050
- Silver Lake Blue #778DA9 ΔE 0.050
Use #899CB0 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.