#899CEF
Closest named color: Periwinkle Blue (#8F99FB). oklch(71.2% 0.123 273.1), rgb(137, 156, 239).
Aa
Black text reads best on this color (8.06:1).
About this color
#899CEF is a medium-light, moderately saturated blue. In OKLCH its lightness is 71%, its chroma 0.123 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Periwinkle Blue (#8F99FB), ΔE 0.022 away. Black text reads best on it, at 8.06:1.
| Hue family | Blues |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Periwinkle Blue (#8F99FB) |
| Black text | 8.06:1 |
| White text | 2.60:1 |
Values
| HEX | #899CEF |
| RGB | rgb(137, 156, 239) |
| HSL | hsl(229, 76%, 74%) |
| OKLCH | oklch(71.2% 0.123 273.1) |
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 #899CEF | 2.60:1 | Fails | Lc -55.9 | Large or bold text, headings |
| Black text on #899CEF | 8.06:1 | AAA | Lc 53.3 | Large or bold text, headings |
| #899CEF text on white | 2.60:1 | Fails | Lc 50.7 | Large or bold text, headings |
| #899CEF text on black | 8.06:1 | AAA | Lc -51.2 | 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
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#CFD8F6
oklch(88.5% 0.042 272.3)
-
Step 300
300
#B0BEF3
oklch(80.9% 0.077 273.1)
-
Step 400
400 (this color)
#899CEF
oklch(71.2% 0.123 273.1)
-
Step 500
500
#6B7FE7
oklch(63% 0.157 272.9)
-
Step 600
600
#5566D6
oklch(55.7% 0.171 273)
-
Step 700
700
#4654B9
oklch(49.1% 0.159 273.2)
-
Step 800
800
#394596
oklch(42.7% 0.132 273.1)
-
Step 900
900
#313B77
oklch(37.7% 0.102 273.4)
-
Step 950
950
#1C2346
oklch(27% 0.065 272.8)
#899CEF 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) | #7FA5F2 | 0.024 |
| Deuteranopia (no green cones) | #769CED | 0.023 |
| Tritanopia (no blue cones) | #67ADBA | 0.111 |
| Achromatopsia (no color) | #A0A0A0 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #899CEF
#899CEF
oklch(71.2% 0.123 273.1)
- #BCA03A
#BCA03A
oklch(71.2% 0.123 93.5)
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 #899CEF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Periwinkle Blue #8F99FB ΔE 0.022
- Perrywinkle #8F8CE7 ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.050
- Lavender Blue #8B88F8 ΔE 0.055
- Carolina Blue #8AB8FE ΔE 0.072
- Periwinkle #8E82FE ΔE 0.073
- Chefchaouen Blue #4895EF ΔE 0.073
- Soft Blue #6488EA ΔE 0.074
Use #899CEF 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.