#899BB9
Closest named color: Cool Gray (#8D99AE). oklch(68.6% 0.049 260.6), rgb(137, 155, 185).
Aa
Black text reads best on this color (7.45:1).
About this color
#899BB9 is a medium-light, muted blue. In OKLCH its lightness is 69%, its chroma 0.049 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cool Gray (#8D99AE), ΔE 0.016 away. Black text reads best on it, at 7.45:1.
| Hue family | Blues |
| Lightness | medium-light (69%) |
| Chroma | muted (0.049) |
| Temperature | cool |
| Nearest name | Cool Gray (#8D99AE) |
| Black text | 7.45:1 |
| White text | 2.81:1 |
Values
| HEX | #899BB9 |
| RGB | rgb(137, 155, 185) |
| HSL | hsl(218, 26%, 63%) |
| OKLCH | oklch(68.6% 0.049 260.6) |
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 #899BB9 | 2.81:1 | Fails | Lc -59.4 | Large or bold text, headings |
| Black text on #899BB9 | 7.45:1 | AAA | Lc 49.9 | Large or bold text, headings |
| #899BB9 text on white | 2.81:1 | Fails | Lc 54.1 | Large or bold text, headings |
| #899BB9 text on black | 7.45:1 | AAA | Lc -47.7 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D3DAE5
oklch(88.6% 0.017 259.4)
-
Step 300
300
#B6C1D5
oklch(80.9% 0.031 262.5)
-
Step 400
400 (this color)
#899BB9
oklch(68.6% 0.049 260.6)
-
Step 500
500
#748AB0
oklch(63% 0.063 261.2)
-
Step 600
600
#5C749B
oklch(55.6% 0.067 259.9)
-
Step 700
700
#4C6185
oklch(49.1% 0.064 260.9)
-
Step 800
800
#3E4F6C
oklch(42.6% 0.053 260.9)
-
Step 900
900
#354258
oklch(37.7% 0.042 260.8)
-
Step 950
950
#1F2733
oklch(27.1% 0.025 258.3)
#899BB9 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) | #919CBA | 0.011 |
| Deuteranopia (no green cones) | #8C98B8 | 0.008 |
| Tritanopia (no blue cones) | #7CA1A5 | 0.043 |
| Achromatopsia (no color) | #9A9A9A | 0.049 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #899BB9
#899BB9
oklch(68.6% 0.049 260.6)
- #AA9778
#AA9778
oklch(68.5% 0.049 79.9)
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 #899BB9, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Gray #8D99AE ΔE 0.016
- Bluey Grey #89A0B0 ΔE 0.022
- Bluegrey #85A3B2 ΔE 0.028
- Greyblue #77A1B5 ΔE 0.029
- Cool Steel #97A7B3 ΔE 0.043
- Cool Grey #95A3A6 ΔE 0.044
- Silver Lake Blue #778DA9 ΔE 0.050
- Blue Grey #758DA3 ΔE 0.055
Use #899BB9 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.