#899FFB
Closest named color: Periwinkle Blue (#8F99FB). oklch(72.4% 0.136 272.4), rgb(137, 159, 251).
Aa
Black text reads best on this color (8.41:1).
About this color
#899FFB is a medium-light, moderately saturated blue. In OKLCH its lightness is 72%, its chroma 0.136 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.016 away. Black text reads best on it, at 8.41:1.
| Hue family | Blues |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.136) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.41:1 |
| White text | 2.49:1 |
Values
| HEX | #899FFB |
| RGB | rgb(137, 159, 251) |
| HSL | hsl(228, 93%, 76%) |
| OKLCH | oklch(72.4% 0.136 272.4) |
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 #899FFB | 2.49:1 | Fails | Lc -53.9 | Large or bold text, headings |
| Black text on #899FFB | 8.41:1 | AAA | Lc 55.1 | Large or bold text, headings |
| #899FFB text on white | 2.49:1 | Fails | Lc 48.9 | Large or bold text, headings |
| #899FFB text on black | 8.41:1 | AAA | Lc -53.1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9FB
oklch(93.6% 0.025 273.5)
-
Step 200
200
#CED8F9
oklch(88.5% 0.047 272.1)
-
Step 300
300
#ADBEF8
oklch(80.9% 0.084 271.8)
-
Step 400
400 (this color)
#899FFB
oklch(72.4% 0.136 272.4)
-
Step 500
500
#677DF1
oklch(63% 0.174 272.4)
-
Step 600
600
#5163E0
oklch(55.6% 0.19 272.5)
-
Step 700
700
#4251C2
oklch(49% 0.176 272.4)
-
Step 800
800
#36439D
oklch(42.6% 0.146 272.4)
-
Step 900
900
#2E3A7D
oklch(37.7% 0.114 272.2)
-
Step 950
950
#1B2249
oklch(26.9% 0.072 272.9)
#899FFB 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) | #7DA9FF | 0.027 |
| Deuteranopia (no green cones) | #739FF9 | 0.026 |
| Tritanopia (no blue cones) | #5FB2C1 | 0.122 |
| Achromatopsia (no color) | #A4A4A4 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #899FFB
#899FFB
oklch(72.4% 0.136 272.4)
- #C4A329
#C4A329
oklch(72.5% 0.137 92.7)
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 #899FFB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.016
- Perrywinkle #8F8CE7 ΔE 0.051
- Cornflower Blue #6495ED ΔE 0.057
- Lavender Blue #8B88F8 ΔE 0.057
- Carolina Blue #8AB8FE ΔE 0.065
- Periwinkle #8E82FE ΔE 0.073
- Chefchaouen Blue #4895EF ΔE 0.078
- Soft Blue #6488EA ΔE 0.081
Use #899FFB 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.